Based on USDA suggestion, a U.S. adult should be spending anywhere from $165 to $345 per month on food, depending on age and gender. A random sample of 120 adults in Washington State is polled regarding the amount of money they spend each month on food. The sample has an average of $273.61 with a standard deviation of $61.59. Based on this information, complete the following questions.
a) (5pts)Show that the requirements to build a confidence interval are met.
b) (5pts)State the critical value for a 90% confidence interval
c) (5pts)Compute the 90% confidence interval. State values to two decimal places.
d) (5pts)Interpret the 90% confidence interval using complete sentences.

Answers

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Based on this sample, we can say with 90% confidence that the average amount of money spent on food by adults in Washington State is likely to be between $264.30 and $282.92 per month.

a) To determine if the requirements to build a confidence interval are met, we need to check if the following conditions are satisfied:

Random Sampling: The problem states that a random sample of 120 adults in Washington State was polled, which satisfies the random sampling condition.

Independence: It is assumed that the individuals in the sample are independent of each other, meaning that one person's response does not affect another person's response.

This assumption is reasonable for this situation.

Sample Size: The sample size is 120, which is greater than 30. When the sample size is large, the Central Limit Theorem applies, allowing us to use a normal distribution for the sampling distribution of the sample mean.

Normality: In order to use the normal distribution, the population distribution needs to be approximately normal or the sample size needs to be large. Since the population distribution is not specified, we will assume that the sample size of 120 is large enough for the Central Limit Theorem to apply.

b) The critical value for a 90% confidence interval can be obtained from the standard normal distribution table or a statistical software. For a 90% confidence level, the critical value is 1.645.

c) To compute the 90% confidence interval, we will use the following formula:

Confidence Interval = sample mean ± (critical value x standard deviation / sqrt(sample size))

Confidence Interval = $273.61 ± (1.645 x $61.59 / sqrt(120))

Confidence Interval = $273.61 ± (1.645 x $61.59 / 10.954)

Confidence Interval = $273.61 ± $9.31

The 90% confidence interval is approximately $264.30 to $282.92.

d) The 90% confidence interval for the amount of money spent on food by adults in Washington State ranges from approximately $264.30 to $282.92.

This means that we are 90% confident that the true population mean falls within this range. In other words, if we were to repeat this sampling process multiple times and construct 90% confidence intervals, we would expect about 90% of those intervals to contain the true population mean.

Therefore, based on this sample, we can say with 90% confidence that the average amount of money spent on food by adults in Washington State is likely to be between $264.30 and $282.92 per month.

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Related Questions

9,000x0.34
Plss help me

Answers

Answer:

3060

Step-by-step explanation:

Answer:

3,060

Step-by-step explanation:

9000 x 0.34 = 9000 x 34/100

9000 x 34/100 = 306000/100

306000/100 and 100/100 = 3060

Which statements are correct? check all that apply. more 7th graders were surveyed than 8th graders. the marginal relative frequency for action movies is 44%. the joint relative frequency for 8th graders who like comedy movies is 16%. most students prefer drama movies. half of the 7th graders prefer action movies.

Answers

The true statements from the given information are:

b. the marginal relative frequency for action movies is 44%. c. the joint relative frequency for 8th graders who like comedy movies is 16%.

How to determine true statement?

From the two-way frequency table of the dataset, we have the following highlights

Action movie marginal frequency = 44%8th graders that like comedy movies joint relative frequency = 16%

From the above highlight, we can conclude that options (b) and (c) are correct

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Answer:

B, C, E on edge2022

Step-by-step explanation:

Find an equation of the line perpendicular to the line 3x+6y=5 and passing through the point (1,3). Write the equation in the standard form.

Answers

The standard form of the equation of a line perpendicular to the line (3x + 6y = 5) and passing through the point (1, 3) is (2x - y = -1)

To determine the equation of a line perpendicular to the line (3x + 6y = 5) and passing through the point (1, 3), we can follow these steps:

1. Obtain the slope of the provided line.

To do this, we rearrange the equation (3x + 6y = 5) into slope-intercept form (y = mx + b):

6y = -3x + 5

y =\(-\frac{1}{2}x + \frac{5}{6}\)

The slope of the line is the coefficient of x, which is \(\(-\frac{1}{2}\)\).

2. Determine the slope of the line perpendicular to the provided line.

The slope of a line perpendicular to another line is the negative reciprocal of the slope of the provided line.

So, the slope of the perpendicular line is \(\(\frac{2}{1}\)\) or simply 2.

3. Use the slope and the provided point to obtain the equation of the perpendicular line.

We can use the point-slope form of a line to determine the equation:

y - y1 = m(x - x1)

where x1, y1 is the provided point and m is the slope.

Substituting the provided point (1, 3) and the slope 2 into the equation, we have:

y - 3 = 2(x - 1)

4. Convert the equation to standard form.

To convert the equation to standard form, we expand the expression:

y - 3 = 2x - 2

2x - y = -1

Rearranging the equation in the form (Ax + By = C), where A, B, and C are constants, we obtain the standard form:

2x - y = -1

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What are 3 ways to find a unit rate on a graph

Answers

You divide the numerator of the given rate by the denominator of the given rate

Answer: One way is Rise/Run or Y/X

Step-by-step explanation:

You first find two points on the graph and Y2-y1 gives you the rise and X2-X1 gives you the run you then put the rise on top and the run below to get Y/X or rise over run

Hope this helped

need help its 7th grade math​

need help its 7th grade math

Answers

Answer:

1 inch represents 60 feet.

Step-by-step explanation:

120/2

= 60

So his scale is 1:60

Answer:

Its 1 inch represents 60 ft

Step-by-step explanation:

you have to divide 120 by 2 and thats 1 inch per 60 feet

What is the sign of 3x y3xy3, x, y when x>0x>0x, is greater than, 0 and y<0y<0y, is less than, 0?

Answers

Answer:

this is confusing

Step-by-step explanation:

Answer:

0 because 0 times whatever is 0

Step-by-step explanation:

Posted 11:45 AM Salve 5.35+55 = 15 Your answer​

Answers

Answer:

False

Step-by-step explanation:

The left side 60.35 does not equal to the right side 15, which means that the given statement is false.

Jordon dog weighs P pounds. Emmets dog weighs 25% more than Jordons Dog. Which expression represents the weight in pounds of emmets dog select two answers 0.25p 1.25p p+0.25 P+ 1.25 p+0.25p

Answers

Answer:

1.25p

p+0.25p

Step-by-step explanation:

7. Use the dot product to determine which of the following vector pairs are
orthogonal,
A. v, (22,15) and v₂ = (-2,4)
Part I: Multiply the two x-coordinates of the vectors and the two y
coordinates of the vectors. Write each product below. (2 points)

Answers

The vector pairs v, (22,15) and v₂ = (-2,4) are not orthogonal.

What is vector algebra?

Vector algebra entails performing algebraic operations on vectors. Vector algebra performs algebraic operations on vector magnitude and vector direction. Many applications in physics and engineering use vector algebra to perform addition and multiplication operations on physical quantities represented as vectors in three-dimensional space.

Given that the vector pairs are v, (22,15) and v₂ = (-2,4). For the vectors to be orthogonal the dot product should be equal to zero.

Calculate the dot product for the given points,

V = ( 22i + 15j) . ( -2i + 4j )

V = -44 + 60  Here, (i.i =1 and j.j = 1)

V = 16

The dot product is not equal to zero. Hence, the vectors are not orthogonal.

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Write the following number r in decimal representation if the 64-bit binary representation of r is given by:

Answers

The decimal representation of binary number is r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³+ ............... +  1 x 2⁶³

To convert r to decimal representation, we need to use the following formula:

r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³+ ............... +  1 x 2⁶³

In this formula, represents the i-th bit of the binary representation of r, and the exponent represents the place value of that bit. The rightmost bit, or the one with the smallest exponent, has a place value of 2⁰, while the leftmost bit, or the one with the largest exponent, has a place value of  2⁶³

Let's say we have the binary representation 1101. To convert this to decimal, we would use the formula:

r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³

Simplifying this equation, we get:

r = 1 + 0 + 4 + 8

r = 13

So, the decimal representation of the binary number 1101 is 13.

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Complete Question:

Write the number r in decimal representation if the 64-bit binary representation of r by using the Boolean expressions.

what is the y-intercept of the line described by the equation y=-6x+3

Answers

Answer: y intercept = 3 ✅

Step-by-step explanation:

Hii, do you need to know the y intercept of the line that is described by the line y=-6x+3? No problem. (:

Note that this particular equation is given to us in "slope intercept" form.

The "slope intercept" formula is y=mx+c, in which "m" denotes the slope and "c" denotes the y intercept.

Looking back at our equation, let's consider this:

"What is the y intercept of the line that is described by the equation y=-6x+3?"

Note that the y intercept is a constant number; it does not come before any variables.

\(\large\boldsymbol{\therefore,\;the\;y\;intercept\;is\;3}\)

Voila! There's our solution, cheers! (:

--

Hope that this helped! Best wishes.

\(\it Reach\qquad far.}\\Aim\qquad high.}\\Dream\qquad big.\)

--

\(\bigstar\underbrace\)

Y intercept is positive 3

Luke cuts a foam block along the red line. When he looks at the newly exposed
face, what is the shape of the cross-section?

Luke cuts a foam block along the red line. When he looks at the newly exposedface, what is the shape

Answers

Answer:

A)a rectangle 5 inches by 6 inches to get the results

Solve Please:(c^5)(c)(c^2) Thank You ^-^

Answers

Answer:

c^(8)

Step-by-step explanation:

(c^5)(c)(c^2)

When the bases are the same, we can add the exponents when multiplying

The implied exponent on c is c^1

c^( 5+1+2)

c^(8)

Which point bisects the segment ZV?

Which point bisects the segment ZV?

Answers

Bisect means it is in the middle so that the length of each side would be the same.

The bisector is point W

Harish has dug out a cuboidal well with dimensions 2m x 1.5m x 10m in his field. Find
the cost of cementing the walls of the well at the rate Rs 52 per m2

Answers

The cost of cementing the walls of the cuboidal well is Rs 3640.

How is the surface area of a cuboid determined?

A three-dimensional solid form with six rectangular sides is called a cuboid. It also goes by the name rectangular prism. The shapes and sizes of the faces on either side of each other are identical.

A cuboid's surface area is the sum of all of its faces. We can determine the area of each face and put them together to determine the cuboid's surface area.

Given that, the cost of cementing the walls of the well at the rate Rs 52 per square m.

Thus,

Area of one rectangular face = length x height = 2 x 10 = 20m².

Area of the other rectangular face = width x height = 1.5 x 10 = 15m².

Total surface area of the walls = 2(20) + 2(15) = 70m².

Now, the cost of cementing the walls of the well at the rate of Rs 52 per m² is:

Cost = 70m x Rs 52 = Rs 3640

Hence, the cost of cementing the walls of the well is Rs 3640.

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William bought hoodies for his team members. The cost of all the hoodies, including a $4 shipping fee, is $379. If the cost of each hoodie is $62.50, how many hoodies did William buy? A. 5 B. 6 C. 12 D. 32​

Answers

Answer:

5

Step-by-step explanation:

cuzzzzzzzzzzzzzzzzzzzzzz

Answer:

it would be 6 hoodies and he had a total of $4 dollars remaining

Step-by-step explanation:

the bon-ton is having a 40% off sale the original price of a pair of jeans is $32.50 what is the discount?

Answers

Answer:

They are 13 dollars off, with a new price of $19.50

Step-by-step explanation:

40% can be written as 0.4, so just multiply 0.4 by 32.50

0.4 times 32.5 = 13

32.5 - 13 = 19.5

13 dollars off, with a new price of 19.5

Roberto purchased airline tickets for his family. The tickets cost $1,250. The airline also charged a luggage fee, bringing the total cost to $1,400. What is the percent increase in the cost due to the luggage fee?
The cost increase is 12%.
The cost increase is 20%.
The cost increase is 48%.
The cost increase is 89%.

Answers

Answer: The answer is 12%

Step-by-step explanation:

Answer:

A.)  THE COST INCREASE IS 12%.

Step-by-step explanation:

1. Identify the base, b, of the function f (x) = ab" if its graph passes through the points (1, 6) and (2, 18). (1 point)
A. 2
B. 5
C. 4
D. 3

Answers

Answer:

B. 5

Step-by-step explanation:

Answer: B

Step-by-step explanation:

which division problem does the model below show?

4 fraction bars. The fraction bars are labeled 1 and each have 6 boxes underneath labeled one-sixth.

4 divided by one-sixth = 24
4 divided by one-sixth = 12
24 divided by one-sixth = 4
12 divided by one-sixth = 4


I searched and none was right. :/ Please help im timed.

Answers

The model "4 fraction bars. The fraction bars are labeled 1 and each have 6 boxes underneath labeled one-sixth" shows 4 divided by one-sixth = 24

The correct answer option is option A

How to use division problem to represent a model?

Given:

4 fraction bars

If each fraction bars has 6 boxes, then, the total boxes for 4 fraction bars can be solved using ratio

1 fraction bars : 6 boxes

4 fraction bars : x

Equate the ratios

1 : 6 = 4 : x

1/6 = 4/x

cross product

1 × x = 4 × 6

x = 4 × 6/1

Divide by the reciprocal of 6/1

x = 4 ÷ 1/6

Hence the division problem that modelled the expression is 4 ÷ 1/6

4÷1/6 = 4×6/1

4÷1/6 = 24

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A dance class consists of 22 students, of which 10 are women and 12 are men. if 5 men and 5 women are to be chosen and then paired o as partners, how many results are possible?

Answers

2 pairs are possible with this

Consider the following data for MRP. Develop the material requirements plan for item B and C, and answer questions below

MPS start:

End item Week 1 Week 2 Week 3 Week 4 Week 5 Week 6

A 120 80

Bill of materials:

End item A is made of 1 unit of item B.

Item B is made of 2 units of item C.

MRP-related information for each item:

Item Leadtime (weeks) Lot sizing Safety stock On-hand inventory Scheduled receiptsB 1 L4L 0 30 60 in

week 1

C 2 FOQ (50) 20 80 None

What is the gross requirement for item B in Week 3?

i. 0 unit

ii. 80 units

iii. 120 units

iv. 200 units

v. 240 units

Answers

The gross requirement for item B in Week 3 is 80 units.

The gross requirement for item B in Week 3, we need to calculate the demand for item B based on the bill of materials and the requirements for item A.

From the MPS (Master Production Schedule) provided, we can see that the gross requirement for item A in Week 3 is 80 units.

According to the bill of materials, item A requires 1 unit of item B. Therefore, the gross requirement for item B can be calculated by multiplying the gross requirement for item A by the quantity needed for item B in the bill of materials.

Gross requirement for item B = Gross requirement for item A × Quantity needed for item B in bill of materials

Gross requirement for item B = 80 units × 1 unit

Gross requirement for item B = 80 units

Therefore, the gross requirement for item B in Week 3 is 80 units.

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Evaluate the definite integral. ∫ −40811 x 3dx−352−8835288

Answers

To evaluate the definite integral ∫[-40,811, -352] x^3 dx, we can use the power rule of integration. Applying the power rule, we increase the exponent of x by 1 and divide by the new exponent:

∫ x^3 dx = (1/4) x^4 + C,

where C is the constant of integration.

Now, we can evaluate the definite integral by substituting the upper and lower limits:

∫[-40,811, -352] x^3 dx = [(1/4) x^4] |-40,811, -352

= (1/4) (-40,811)^4 - (1/4) (-352)^4.

Evaluating this expression will give us the value of the definite integral.

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5.) A woman put $580 into a savings account for one year. The rate of interest on the account was 6.5%. How much was the interest for the vear in dollars and cents? (Round to the nearest cent) 6.) Pamela bought an electric drill at 85% of the regular price. She paid $32.89 for the drill. What was the regular price? (Round to the nearest cent)

Answers

The amount of interest for the year was 3,770 cents, and the regular price of the electric drill that Pamela bought before the discount was 21,927 cents

To find the interest we can use this following formula:

Interest = P x R x T.

Where:

P = Principal amount (the beginning balance).

R = Interest rate

T = Number of time periods

In this case, we are given that;

Principal amount (P) = $580

Interest rate (R) = 6,5 %

Time = 1 year

Hence, The amount of the interest = 6,5% of $580

                                                     = 0.065 × $580

                                                     = $37.7

1 dollar = 100 cents

Hence, $37.7 = 37.7 × 100 cents equal to 3,770 cents

To find the regular price of the electric drill, we can use this following formula:

P = (1 – d) x

Where,

P = Price after discount

D = discount rate

X = regular price

In this case, we are given that:

P = $32.89

D = 85% = 0,85

Hence, the regular price:

P = (1 – D) x

32.89 = (1 – 0.85) X

32.89 = 0.15X

X = 32.89/0.15

X= 219.27

1 dollar = 100 cents

Hence, $219.27 = 219.27 × 100 cents equal to 21,927 cents

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A line with a slope of 4 passes through the point (2, 1). What is the equation of this line?

Answers

Answer:

point slope form: y - 1 = 4 (x -2)

slope intercept form: y = 4x -7

Step-by-step explanation:

If you want it in point slope form it would be: y - 1 = 4 (x -2)

but if you want it in slope intercept form, you solve this equation

y -1 = 4 (x-2)

y-1 = 4x -8

 +1          +1

y = 4x -7 in slope intercept form

Two number cubes are rolled. Each number cube is labeled 1 through 6.

What is the probability that both number cubes will land on 1?

Answers

Step-by-step explanation:

Probabibility = 1/6 * 1/6 = 1/36 = 2.77%.

find the area under the standard normal curve over the interval specified below to the right of z=3

Answers

The standard normal curve, also known as the standard normal distribution or the z-distribution, is a specific probability distribution that follows a bell-shaped curve. The area under the standard normal curve to the right of z = 3 is approximately 0.0013.

For the area under the standard normal curve to the right of z = 3, we need to calculate the cumulative probability from z = 3 to positive infinity.

The standard normal distribution, also known as the z-distribution, has a mean of 0 and a standard deviation of 1. It is a symmetric bell-shaped curve that represents the distribution of standard scores or z-scores.

Using statistical tables or software, we can find the cumulative probability associated with z = 3, which represents the area under the curve to the left of z = 3.

The cumulative probability for z = 3 is approximately 0.9987.

For the area to the right of z = 3, we subtract the cumulative probability from 1.

Therefore, the area to the right of z = 3 is approximately 1 - 0.9987 = 0.0013.

In conclusion, the area under the standard normal curve to the right of z = 3 is approximately 0.0013.

This means that the probability of randomly selecting a value from the standard normal distribution that is greater than 3 is approximately 0.0013 or 0.13%.

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If +8x = -48, find the value of +50 - 9x.
Please hurry

Answers

Answer:

-4

Step-by-step explanation:

if +8x = -48

x = 48/8

x = 6

plug x into eq. below

= 50 - 9x

= 50 - 9(6)

= -4

(GIVING BRAINLIEST!!!)

Solve one eighth divided by two equals blank by rewriting it as the multiplication equation one eighth times one half equals blank.

A) 16
B) 1/16
C) 1/10
D) 2/16

Answers

Answer:

B) \(\displaystyle \frac{1}{16}\)

Step-by-step explanation:

\(\displaystyle \frac{1}{16} = \frac{\frac{1}{8}}{2} \\ \\ OR \\ \\ \frac{1}{8} \div 2 = \frac{1}{8} \times \frac{1}{2} = \frac{1}{16}\)

I am joyous to assist you at any time.

i NEEEEED HELP ASAPPPP PLS ANSWER AND DONT USE MY POINTS

i NEEEEED HELP ASAPPPP PLS ANSWER AND DONT USE MY POINTS

Answers

9*10^ 6= 9000000
6*10^5= 600000
9000000-600000=8400000<—answer
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