what is the confidence level for the interval x ± 1.43⁄ n ? (round your answer to one decimal place.)

Answer:

It is 50 mph

Step-by-step explanation:

Answer:

0.9375

Step-by-step explanation:

\(\frac{15}{16}\) ( divide value on numerator by value on denominator , that is

15 ÷ 16 = 0.9375

The monthly payment if the interest rate was 11% will be $45.63.

The remaining amount is calculated as,

P = (1 - 0.20) x $925

P = 0.80 x $925

P = $740

The monthly payment is calculated as,

MP = [$740 + ($740 x 0.11)] / 18

MP = $821.4 / 18

MP = $45.63

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The monthly payment is $49.69.

We have,

The amount of the down payment is:

0.20 x $925 = $185

So the amount financed is:

$925 - $185 = $740

Using the formula for the monthly payment on a loan:

= (Pr(1+r)^n) / ((1+r)^n - 1)

where:

P = principal or amount financed = $740

r = monthly interest rate = 11%/12 = 0.0091667

n = total number of payments = 18

Plugging in the values, we get:

Monthly payment

= ($7400.0091667 x (1+0.0091667)^18) / ((1 + 0.0091667)^18 - 1)

= $49.69 (rounded to the nearest cent)

Therefore,

The monthly payment is $49.69.

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Answer:

2

Step-by-step explanation:

this might be the rong answer

Answer:

It may be 18 centimeters

-2.05 is the critical value for the left-tailed test .

What is critical z value?

The -1.96 and +1.96 standard deviations are the essential z-score values when adopting a 95 percent confidence level.

                               With a 95 percent confidence level, the uncorrected p-value is equal to 0.05.The critical value for a two-sided test is Z 1-/2, while for a one-sided test, it is Z 1.

                      You reject the null hypothesis if the absolute Z-value is higher than the crucial value. If not, you have not successfully ruled out the null hypothesis.

Given that,

α = 0.02.

left tailed test

Zα = 0.02 = -2.05

critical value = -2.05

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Answer:

third option

Step-by-step explanation:

Given

z = 6πxy ( isolate x by dividing both sides by 6πy )

\(\frac{z}{6\pi y}\) = x

The average rate of change from 1.5h to 2h is -0.5h.

Average rate of change:

Average rate of change means the average rate at which one quantity is changing with respect to something else changing.

The average rate of change formula is given as,

A(x) = b - a

where,

A(x) = Average rate of change

a = Value of a

b = Value of b

Given,

Here we have to find the average rate of change from 1.5h to 2h.

Let us consider the value of x2 = 1.5h and the value of x1 is 2h.

So, the average rate of change is calculated as,

Δx = x2 - x1

Apply the values on the formula then we get,

Δx = 1.5 - 2

When we substract the values then we get,

Δx = - 0.5

Therefore, the average rate of change is -0.5h.

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Answer:

8cm

Step-by-step explanation:

the ratio of cm to km is 1 cm on the map equals 40 km. or 1/40 so you have to find what is x/320 using the ratio of 1/40 you gt that x equals 8

Answer:

x=3

Step-by-step explanation:

Answer:

Step-by-step explanation:

Solving for x:

Answer:

-30

Step-by-step explanation:

-x/10 = 3

-x = 3 * 10 (transposing)

-x = 30

x = -30

Answer:

2/11

Step-by-step explanation:

Let's say our fraction is x = 0.1818181818...

The trick is to multiply x by 10²=100 in this case, since there are two repeating digits, and then subtract the original x.

So, in fact you are subtracting 0.181818 from 18.181818 which effectively cancels the entire bit after the decimal point.

You get:

100x - x = 18

Which you can solve:

99x = 18

x = 18/99 = 2/11

The median number of siblings for all the 300 students selected randomly from two schools and surveyed is equals to the 1. So, the correct choice for this problem is option (b).

The median of a data set is the middle value when the data points are sorted in either ascending or descending order. In case of odd number of data values, the middle value is median but in case of even number of values the arithmetic mean two middle value is median. We have a total of 600 data points provided, which is even so the median will be the average of the 300ᵗʰ and 301ᵗʰ data points. When the data points are sorted in order

Therefore, both the 300ᵗʰ and 301ˢᵗ values are 1, and hence the median is 1.

So, here choices A, C, and D are incorrect . Hence, required value is 1.

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Complete question:

A sociologist chose 300 students at random from each of two schools and asked each student how many siblings he or she has. The results are shown in the table below. There are a total of 2,400 students at Lincoln School and 3,300 students at Washington School.

What is the median number of siblings for all the students surveyed?

a) 0

b) 1

c) 2

d)3

The value of x from the given figure is 12 units.

Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio. Either of these conditions will prove two triangles are similar.

From the given figure,

Consider ΔADC and ΔABC,

∠C=∠C (Reflex property)

AC=AC (Reflex property)

∠BAC=∠CDA=90°

By AA similarity, ΔADC ~ ΔABC

So, AC/BC = DC/AC

x/36 = 4/x

x²=36×4

x²=144

x=12 units

Therefore, the value of x from the given figure is 12 units.

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Answer:

I think it 9 too , I'm so sorry if I'm wrong

A randomized controlled trial in which each subject is assigned to a combination of at least two independent variables is an example of a Factorial Design.

In statistics, a full factorial experiment is one in which all potential combinations of the levels across all of the factors are taken into account by the experimental units. A full factorial experiment has two or more factors with discrete possible values or "levels" in its design. A fully crossed design is another name for a full factorial design. Using such an experiment, the researcher can examine how each element affects the response variable as well as how different factors interact with one another.

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Step-by-step explanation:

Turn the standard form equation into a slope-intercept form equation using algebra.

Slope-intercept form: \(y=mx+b\)

Key:

Subtract each side by 3x:

\(8y=-3x+5\)

Divide each side by 8:

\(y=-\frac{3}{8} x+\frac{5}{8}\)

-3/8 is in the position of m, the slope.

The slope is -3/8.

Answer:

The vertex is option C: (-6, -2)

Step-by-step explanation:

The equation for a parabola is y = a(x – h)² + k where h and k are the y and x coordinates of the vertex, respectively. Thus, the vertex is (-6,2)

Pls mark brainliest.

Answer:

4 packs of medium cups and 6 packs of large cups

Step-by-step explanation:

1.80x + 2.40y = 21.60

1.80(4) + 2.40(6) = 21.60

7.2 + 14.4 = 21.60

21.60 = 21.60

Answer:

Ivy bought 4 packs of medium cups, and 6 packs of large cups.

Step-by-step explanation:

To solve this problem, we will have to use a system of equations. Our first equation will represent the cups, and our second equation the costs.

Let \(m\) equal medium cups.

Let \(l\) equal large cups.

\(m+l=10\)

\(1.80m+2.40l=21.60\)

Let's use substitution to solve this system.

Subtract \(l\) from both sides of the first equation:

\(m=10-l\)

Let's substitute \(10-l\) into the second equation for \(m\):

\(1.80(10-l)+2.40l=21.60\)

Distribute \(1.80\) into \((10-l)\):

\(18-1.80l+2.40l=21.60\)

Combine like terms:

\(18+0.6l=21.60\)

Subtract \(18\) from both sides of the equation:

\(-0.6l=3.60\)

Divide by the coefficient of \(l\), which is \(0.6\):

\(l=6\)

Ivy bought 6 packs of large cups.

_

Let's substitute \(6\) into the first equation to find the number of medium cup packs:

\(m+6=10\)

Subtract \(6\) from both sides of the equation:

\(m=4\)

Ivy bought 4 packs of medium cups.

_

We can check our work 2 ways; by substituting our solved values into the initial equations.

1st Equation Check:

\((4)+(6)=10\)

\(10=10\)

2nd Equation Check:

\(1.80(4)+2.40(6)=21.60\)

\(7.2+14.4=21.60\)

\(21.60=21.60\)

Our answers are correct!

The model on the fifth row has a diameter of 32.5 meters, hence the actual diameter is 32.55 = <<32.55=162.5>>162.5 meters.

The minimal number of coordinates required to specify each point within a mathematical space (or object) is known as the dimension in physics and mathematics.

Because only one coordinate is required to identify a point on a line, such as a point at 5 on a number line, a line is said to have one dimension (1D).

Because two coordinates are necessary to identify a point on a surface, such as the perimeter of a sphere or cylinder, it is referred to as having a dimension of two (2D).

For instance, a point on the surface of a sphere requires both a latitude and a longitude to be located.

So, we can use a scale of 2:5 as a conversion factor to identify the table's missing dimensions.

For instance, the model's length in the second row is 2 inches, but the real length is 5 inches.

This implies that the model's 1 inch corresponds to the actual object's 5 inches.

The actual depth is 10 5 = 50 km because the model's depth is 10 km.

Since the model's length is not specified in the fourth row, we are unable to determine its true length.

Therefore, the model on the fifth row has a diameter of 32.5 meters, hence the actual diameter is 32.55 = <<32.55=162.5>>162.5 meters.

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Correct question:

Find the missing dimension. use the scale 2: 5.

2:5

l

model

actual

2. depth: 10 km

3. length: 5 in.

depth: _5 km

length: in.

4. length:

ft

length: 24 ft

5. diameter:

m

diameter: 32.5 m

To show that {1, 2, 3} is linearly independent, we need to prove that the only solution to the equation a11 + a22 + a3*3 = 0 is a1 = a2 = a3 = 0.

Suppose that there exist constants a1, a2, and a3 such that a11 + a22 + a33 = 0. Since 1, 2, and 3 are all in 5, we know that they are nonzero. If a3 = 0, then a11 + a2*2 = 0. Since 2 is not a multiple of 1, a2 must be 0, which means a1 = 0 as well. So we have a1 = a2 = a3 = 0 in this case, and {1, 2, 3} is linearly independent.

If a3 is nonzero, we can divide both sides of the equation by a3 to get a1/ a31 + a2/ a32 + 3 = 0. This means that 3 is a linear combination of 1 and 2, which contradicts the given condition that 3 is not a linear combination of 1 and 2. Therefore, a3 must be 0, and we are back to the previous case where a1 = a2 = a3 = 0.

Therefore, {1, 2, 3} is linearly independent. The conditions that 1, 2, and 3 are in 5, 2 is not a multiple of 1, and 3 is not a linear combination of 1 and 2 are sufficient to show this.

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Answer:

Standard Deviation

Step-by-step explanation:

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

The study conducted by the researcher suffers from several limitations, including the absence of a control group, small sample size, participant bias, and experimenter bias. Furthermore, the sample selection is inadequate, as all the participants are students of one course in a single university.

Moreover, the study fails to account for extraneous variables that might affect the results. Therefore,  that textbooks are not necessary or helpful for learning is premature and cannot be generalized to other courses or universities. T he study is flawed, and more research is needed to assess the effect of textbooks on learning.

The study conducted by the researcher suffers from several limitations. First, there is no control group, which makes it difficult to determine whether the results are due to the absence or presence of the textbook. Second, the sample size is small, which reduces the generalizability of the findings.

Third, there is participant bias, as some students might have bought the textbook even though it was optional, while others might not have bought it even though it was required. Fourth, there is experimenter bias, as the professor who scored the essays knew which section had the textbook and which did not.

Fifth, the sample selection is inadequate, as all the participants are students of one course in a single university. Moreover, the study fails to account for extraneous variables that might affect the results, such as the students' prior knowledge, motivation, and study habits.

Therefore, the  textbooks are not necessary or helpful for learning is premature and cannot be generalized to other courses or universities. The study is flawed, and more research is needed to assess the effect of textbooks on learning.

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No, it does not matter who will go first as the probability of getting both head and tail after flipping a coin is equal to ( 1 / 2 ).

As given in the question,

Number of players playing the game = 2

Number of coins to flip = One

Possible outcomes after flipping a coin = { Head , Coin }

Probability of getting a head

= (Number of favourable outcomes) / ( Total number of outcomes)

= 1 / 2

Probability of getting a tail

= 1 / 2

Either you tossed first or second chances are fifty percent.

Therefore, it does not matter who will go first as probability of getting head and tail is ( 1 / 2) after flipping a coin.

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Answer:

Step-by-step explanation:

Speed = change in distance/change in time

S= Δd/Δt

let d1 = 139.5miles

d2 = 395miles

t1 = 1.5 hrs

t2 = 5hrs

Δd = d2-d1

Δd  = 395-139.5

Δd  = 255.5miles

Δt = 5-1.5

Δt = 3.5hrs

Speed = 255.5/3.5

Speed = 73miles/hr

Hence Kayla's speed is 73miles/hour

Answer:

$67.50

Step-by-step explanation:

25% = .25

90 x .25 = 22.5

90( total) - 22.5 ( 20%) = 67.5

The price of the bus pas is $ 67.50 with a 20% discount.

Answer:

0.15 x A

Step-by-step explanation:

15% is equal to 0.15

of means multiplication

0.15 x A

Answer:

Operations Inverse operations

Addition             Subtraction

Subtraction      Addition

Multiplication      Division

Division           Multiplication

Step-by-step explanation:

i hope this will help you

Answer:

This is the answer

0.024

Q: What is 0.08 times 0.3?

A: 0.08 x 0.3 = 0.024; simplified: 3/125