This probability is greater than 0.05, a can filled less than 12 ounces is not unusual and P ( X > 12.08 ) = 0.3085.
X ~ N ( µ = 12.06 , σ = 0.04 )
P ( X > 12.08 ) = 1 - P ( X < 12.08 )
Standardizing the value
Z = ( X - µ ) / σ
Z = ( 12.08 - 12.06 ) / 0.04
Z = 0.5
P ( ( X - µ ) / σ ) > ( 12.08 - 12.06 ) / 0.04 )
P ( Z > 0.5 )
P ( X > 12.08 ) = 1 - P ( Z < 0.5 )
P ( X > 12.08 ) = 1 - 0.6915
P ( X > 12.08 ) = 0.3085
b)
X ~ N ( µ = 12.06 , σ = 0.04 )
P ( 12 < X < 12.04 )
Standardizing the value
Z = ( X - µ ) / σ
Z = ( 12 - 12.06 ) / 0.04
Z = -1.5
Z = ( 12.04 - 12.06 ) / 0.04
Z = -0.5
P ( -1.5 < Z < -0.5 )
P ( 12 < X < 12.04 ) = P ( Z < -0.5 ) - P ( Z < -1.5 )
P ( 12 < X < 12.04 ) = 0.3085 - 0.0668
P ( 12 < X < 12.04 ) = 0.2417
c)
P ( X < 12 )
Standardizing the value
Z = ( X - µ ) / σ
Z = ( 12 - 12.06 ) / 0.04
Z = -1.5
P ( ( X - µ ) / σ ) < ( 12 - 12.06 ) / 0.04 )
P ( X < 12 ) = P ( Z < -1.5 )
P ( X < 12 ) = 0.0668
Since this probability is greater than 0.05, a can filled less than 12 ounces is not unusual .
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If you rolled two dice, what is the probability
that you would roll a sum of 4?
Give your answer as a simplified fraction.
Answer:
1/36.
Step-by-step explanation:
A total number of possible outcomes = 36.
To get a sum of 12 the possible outcomes are just 6,6.
Find the length of x.
Translate the sentence into an equation.
The sum of 5 times a number and 3 is 8.
Use the variable c for the unknown number.
Answer:
5c + 3 = 8
Step-by-step explanation:
variable is c
5 × c + 3
5 c + 3 = 8
A population's standard deviation is 15. We want to estimate the population mean with a margin of error of 4, with a 98% level of confidence. How large a sample is required? (
A sample size of 76 would be required to estimate the population mean with a margin of error of 4 and a 98% level of confidence.
How to find the sample sizeTo determine the sample size required to estimate the population mean with a specific margin of error and level of confidence, we can use the formula:
n = (Z * σ / E)²
where
n = required sample size
Z = Z-score corresponding to the desired level of confidence
σ = standard deviation of the population
E = desired margin of error
here, we have that
the standard deviation (σ) is given as 15,
the margin of error (E) is 4 and
the level of confidence is 98% and For a 98% confidence level, the Z-score is approximately 2.33.
Plugging the values into the formula:
n = (2.33 * 15 / 4)²
n = (8.7375)²
n ≈ 76.34
n = 76
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The annual revenue and cost functions for a manufacturer of zip drives are approximately R(x)=520x-0.02x² and C(x) = 160x+100,000, where x denotes the number of drives made. What is the maximum annual profit? A. $1,620,000 B. $1,720,000 C. $1,520,000 D. $1,820,000
The maximum annual profit is 1,72,0000
The profit function can be found by subtracting the cost function from the revenue function:
\(P(x) = R(x) - C(x) = (520x - 0.02x^2) - (160x + 100,000) = -0.02x^2 + 360x - 100,000\)
To find the maximum annual profit, we need to find the value of x that maximizes the profit function.
One way to do this is to find the vertex of the parabola given by the profit function.
The x-coordinate of the vertex is given by:
x = -b/2a
where a = -0.02 and b = 360.
Substituting these values, we get:
\(x = -360/(2\times (-0.02)) = 9,000\).
Therefore, the manufacturer should make 9,000 drives to maximize annual profit.
To find the maximum profit, we can substitute this value into the profit function:
\(P(9,000) = -0.02(9,000)^2 + 360(9,000) - 100,000 = $1,720,000\)
Therefore, the answer is (B) $1,720,000.
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please help
The price of a home (in thousands of dollars) is associated with the number of square feet in a home. Home prices in Smavile can be modeled using the equation p = 150 + 0.041a where p is the price of the home in thousands of dollars and a is the area of the house in square feet Home prices in Fancyville can be modeled using the equation p = 250 + 0.198a Ngoc saw a real estate advertisement for a 2800 square foot home that was selling for $280,000. Which city should she predict that the home is in?
Answer:
Its most likely in Smavile
Step-by-step explanation:
S - Smavile
F - Fancyville
\(p_{s} = 150+ 0.041*2800 \\p_{s} = 150 + 114.8 = 264.8\\\\p_{f} = 250 + 0.198*2800\\p_{f} = 250 + 554.5 = 804.5\)
264.8 * 1000 (its in thousands of dollars) = 264,800
 In the expression 9z^4-8+15(y^3+6), name the two factors of the term 15(y^3+6)
Factors multiply to get a product. You can take this process in reverse.
As another example, the number 12 factors into 3*4, where 3 and 4 are the two factors. This idea applies to both numbers and variable expressions as well.
1. After each move, record your location in the table. Then write an expression
to represent the ending position that uses the starting position, the speed,
and the time. The first row is done for you.
All the correct values are,
⇒ 0 + 2×8 = 16
⇒ 0 + 6×2 = 12
⇒ 0 + (-1.1) × 5 = - 5.5
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
The table is shown in image.
Now,
The complete table is,
Starting position Direction Speed Time Ending position Expression
0 right 2 8 0 + 2×8 16
0 right 6 2 0 + 6×2 12
0 left 1.1 5 0 + (-1.1)× 5 - 5.5
Thus, The complete table is,
⇒ 0 + 2×8 = 16
⇒ 0 + 6×2 = 12
⇒ 0 + (-1.1) × 5 = - 5.5
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Please help me
In a city all the houses are either three or four storeyed the ratio of the number of three storyed building to four storeyed building is 5:3 if the total number of buildings is 488 find the number of four storeyed buildings.
please help me!!!!!!!!!!!!!
Answer:
see explanation
Step-by-step explanation:
using the rule of exponents
\(a^{-m}\) = \(\frac{1}{a^{m} }\) , then
\(2^{-5}\)
= \(\frac{1}{2^{5} }\)
= \(\frac{1}{32}\)
Janiya solved the problem 12 X 13 using the Chinese multiplication method. Below is her work.
12 x 13=
Assuming Janiya set up the problem correctly, what is the product?
Step-by-step explanation:
12*13 = 156
hope it helps
thank you
Nicole has 15 nickels and dimes. If the value of her coins is $
1.10how many of each coin does she have?
Nicole has 8 nickels and 7 dimes.
What is system of equations?A system of equations is simply two or more equations that share the same variables.
Let's use a system of equations to solve this problem:
Let x be the number of nickels, and y be the number of dimes.
From the problem, we know that:
x + y = 15 (equation 1) (the total number of coins is 15)
0.05x + 0.1y = 1.1 (equation 2) (the total value of the coins is $1.10)
To solve for x and y, we can use substitution or elimination. Let's use elimination:
Multiply equation 1 by 0.1:
0.1x + 0.1y = 1.5 (equation 3)
Subtract equation 3 from equation 2:
0.05x = 0.4
x = 8
Substitute x = 8 into equation 1:
8 + y = 15
y = 7
Therefore, Nicole has 8 nickels and 7 dimes.
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Find the slope of a line with a y-intercept of -5 that goes through the point (12,3).
Formula: y=mx+b
find (a) the slope of the curve at the given point p, and (b) an equation of the tangent line at p.
To find the slope of the curve at point P and the equation of the tangent line at P, we need to calculate the derivative of the function at that point.
The slope of a curve at a given point represents the rate of change or the steepness of the curve at that specific location. It is determined by finding the derivative of the function with respect to the variable.
To calculate the slope at point P, we differentiate the function with respect to the variable and substitute the x-coordinate of point P into the derivative. The resulting value gives us the slope at that point.
The equation of the tangent line at point P can be determined using the point-slope form of a linear equation. We use the slope obtained from the derivative and the coordinates of point P to construct the equation. By substituting the slope, the x-coordinate, and the y-coordinate into the point-slope form, we can obtain the equation of the tangent line.
By finding the slope and equation of the tangent line, we gain insights into the behavior of the curve at point P and can make predictions or analyze the behavior of the function in its vicinity.
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help me please please please
Answer:
hope this help you
have a great day
God bless you
Can you prove triangles congruent by SAS?.
The triangle ABC and XZY are proved to be congruent by SAS.
Explain the concept of congruence.Congruence of triangles: Two triangles are supposed to be harmonious assuming each of the three comparing sides are equivalent and every one of the three relating angle are equivalent in measure. These triangles can be slides, pivoted, flipped and went to be seemed to be indistinguishable.
By the rule of SAS which means, Two sides are equal thhen the angle between the two sides is also equal (SAS: side, angle, side)
Here in he given triangle,BC=YZ
AC=XZ
∠ACB=∠XZY
By SAS ΔABC≅ΔXYZ
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Justine and Meagan played a trivia game. Justine answered a question incorrectly and lost 7 points. Then Meagan answered correctly and got the opposite score. Which is the correct way to represent that "the opposite of Justine's score was equal to Meagan's score
Answer:
The correct way to represent that "the opposite of Justine's score was equal to Meagan's score" is [- (-7)].
Step-by-step explanation:
We know that the opposite of the opposite of a number, say 2, is the number itself.
That is:
Opposite of 2 is -2.
Then the opposite of -2 is:
- (-2) = 2
It is provided that:
Justine answered a question incorrectly and lost 7 points. Then Meagan answered correctly and got the opposite score.Assume that both Justine and Meagan started with 0 score.
Justine plays first.
If Justine answered a question incorrectly, his score would be -7.
Then Meagan plays, and answers the question correctly.
So, Meagan got the opposite score.
The opposite of -7 will be [- (-7)].
Thus, the correct way to represent that "the opposite of Justine's score was equal to Meagan's score" is [- (-7)].
Describe and explain the difference between explicit formulas for arithmetic
sequences and explicit formulas for geometric sequences.
Answer:
Arithmetic sequence: \(a_{n}=a_{1}+(n-1)d\)
Geometric sequence: \(a_{n}=a_{1}(r)^{n-1}\)
Step-by-step explanation:
The arithmetic sequence: is the sequence whos terms increased or decreased by a constant amount.
Examples:
4, 7, 10, 13, 16, ........................ (increased by 3)25, 20, 15, 10, ......................... (Decreased by 5)The explicit formula for the nth term of the arithmetic sequence is:
\(a_{n}=a_{1}+(n-1)d\) \(a_{1}\) is the first termd is the constant difference between each two consecutive termsn is the position of the number in the sequence
The geometric sequence: is the sequence whos consecutive terms have a constant ratio
Examples:
1, 2, 4, 8, 16, ........................ (Multiplying by 2)625, 125, 25, 5, ......................... (Dividing by 5)The explicit formula for the nth term of the geometric sequence is:
\(a_{n}=a_{1}(r)^{n-1}\) \(a_{1}\) is the first termr is the constant ratio between each two consecutive termsn is the position of the number in the sequence* Arithmetic sequence →→→→→→ Geometric sequence
Has a constant difference →→→→→→ Has a constant ratio
\(a_{n}=a_{1}+(n-1)d\) →→→→→→ \(a_{n}=a_{1}(r)^{n-1}\)
\(d=a_{n}-a_{n-1}\) →→→→→→ \(r=\frac{a_{n}}{a_{n-1} }\)
How many unique ways are there to arrange the 3 letters from the word TIGER?
Answer:
tig, get, tie, reg ger
Step-by-step explanation:
If you wish to calculate the interest on an investment with a rate of 6. 17%, what number will you plug into your equation? a. 0. 00617 b. 0. 0617 c. 0. 617 d. 6. 17.
Therefore, the correct answer is b. 0.0617, as it accurately represents the rate of 6.17% in decimal form, which is necessary for calculating the interest on an investment.
When dealing with percentages in calculations, it is important to convert the percentage to its decimal form. To do this, divide the percentage value by 100.
In this case, the rate is given as 6.17%. To convert it to decimal form, divide 6.17 by 100:
6.17 ÷ 100 = 0.0617
The resulting decimal value, 0.0617, represents the rate of 6.17% in decimal form. This is the number that should be plugged into the equation to calculate the interest on an investment.
The other options provided are:
a. 0.00617: This represents 0.617% rather than the given rate of 6.17%.
c. 0.617: This represents 61.7%, which is not the correct decimal representation of the given rate.
d. 6.17: This is the actual percentage value itself, not its decimal form.
Therefore, the correct answer is b. 0.0617, as it accurately represents the rate of 6.17% in decimal form, which is necessary for calculating the interest on an investment.
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a square's area is 3 times its perimeter. Find the dimensions of the square.
Choose the graph of this equation.
y = -3/2x - 2
Step-by-step explanation:
The correct graph is Graph C.
The graph of the line x / (-4/3) + y / (-2) = 1 is drawn below. Then the correct option is C.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
x/a + y/b = 1
Where 'a' is the x-intercept of the line and ‘b’ is the y-intercept of the line.
The equation is given below.
y = -(3/2)x - 2
Convert the equation into intercept form. Then we have
y = -(3/2)x - 2
2y = -3x - 4
3x + 2y = - 4
x / (-4/3) + y / (-2) = 1
The graph of the line x / (-4/3) + y / (-2) = 1 is drawn below. Then the correct option is C.
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The ratio of the sides of EBD to the sides of ABC is 3:4. Calculate the side lengths of ABC (Round to the nearest hundredth)
Answer:
The side lengths of triangle ABC are 6, 6.67 and 5.33
Step-by-step explanation:
In this question, we are interested in calculating the lengths of triangle ABC
ED: AC = 3:4
4.5:AC = 3:4
4.5/AC = 3/4
3AC = 4 * 4.5
3AC = 18
AC = 18/3 = 6
EB:AB = 3:4
5/AB = 3/4
3AB = 4 * 5
3AB = 20
AB = 20/3 = 6.67
DB:CB = 3/4
4/CB = 3/4
3CB = 4 * 4
CB = 16/3 = 5.33
Someone help!
If there are 365 days in a year and you buy 365 $15 Starbucks gift cards. How much will that cost?
Answer:
If you buy a 15 dollar gift card every day for a year, it will cost $5,475.
Just take the price, multiply it by the amount.
Answer:
$5475
Step-by-step explanation:
365 X 15 =
(365 x 10) + (365 x 5) =
3650 + 1825 =
$5475
1) What is the slope of the following graph?
Answer:\(\frac{3}{-2}\)
Step-by-step explanation:
slope= \(\frac{rise}{run}\)
start at (0,1)
go up 3 units
then go left 2 units
slope= \(\frac{3}{-2}\)
A package of 3 pairs of insulated gloves costs $23.97. What is the unit price of the pairs of gloves?
Answer:
$7.99 each
Step-by-step explanation:
Divide the package price by the package units to get your answer.
(23.97 / 3 = 7.99)
it would be nice if somebody can help me with this!!!
Answer: I’m assuming 160.
Step-by-step explanation: If x = 2:
using PEMDAS
(4(2))(5(2^2)) =
(8)(5(4)) =
(8)(20) = 160
20x^3
20(2^3)=
20(8) = 160
hope this helps
Faizah is paid $11 per hour for her work at a factory. She works 9 hours a day and 24 days a month. She saves $594 a month. Express the amount she saves as a percentage of her income.
Answer:
The amount she saves is 25% of her income
Step-by-step explanation:
She is paid $11 per hour
She works 9 hours per day
and for 24 days per month
So, she works 9(24) hours per month
= 216 hours per month
Now, she is paid $11 hourly, so for 216 hours,
she will have 11(216) = $2376
Total income = $2376 per month
Saving = $594 per month
As a percentage, we divide the savings by the total income,
savings/(total income) = 594/2376 = 1/4 = 0.25
Hence we get 25%
11. The population of 1,000 unicorns is decreasing by 8% every year.
What is the independent and dependent variables of this situation?
A. Independent - Population; Dependent - years
B. Independent - Years; Dependent - population
Using an example, outline the steps involved in performing a
Wald test to test significance of a sub-group of coefficients in a
multiple regression model.
The Wald test is a statistical test that can be used to test the significance of a group of coefficients in a multiple regression model.
The test statistic is calculated as the ratio of the estimated coefficient to its standard error. If the test statistic is significant, then the null hypothesis that the coefficient is equal to zero can be rejected.
Suppose we have a multiple regression model with three independent variables: age, gender, and education. We want to test the hypothesis that the coefficients for age and education are both equal to zero. The Wald test statistic would be calculated as follows:
Test statistic = (Estimated coefficient for age) / (Standard error of estimated coefficient for age) + (Estimated coefficient for education) / (Standard error of estimated coefficient for education)
If the test statistic is significant, then we can reject the null hypothesis that the coefficients for age and education are both equal to zero. This would mean that there is evidence that age and education are both associated with the dependent variable.
The Wald test is a powerful tool that can be used to test the significance of a group of coefficients in a multiple regression model. However, it is important to note that the test statistic is only valid if the assumptions of the multiple regression model are met. If the assumptions are not met, then the p-value of the Wald test may be inaccurate.
Here are some of the assumptions of the multiple regression model:
* The independent variables are independent of each other.
* The dependent variable is normally distributed.
* The errors are normally distributed.
* The errors have constant variance.
If any of these assumptions are not met, then the Wald test may not be accurate.
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