Mathematics High School

On a highway, a random sample is taken of the speed, in mph, of 50 cars. A mean speed of 61.8 mph is calculated with a margin of error of +2.3 for a 95% confidence interval What is the interval estimate of the population mean?
A) 58.7 <h<64.9
B)59.5<h<61.8
C)59.5<h<64.1
D)61.8<h<64.1


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Answers

Answer 1
I am extremely bad at math and I am trying to help other to ask a question, but I personally think C
Answer 2

The interval estimate of the population mean when a random sample is taken of the speed on highway is 59.5<h<64.1. Option C is correct.

What is margin of error?

The probability or the chances of error while choosing or calculating a sample in a survey is called the margin of error.

The interval estimate of the population mean can be found out using the following formula:

[tex]\overline X\pm MOE[/tex]

Here, [tex]\overline X[/tex] is the average mean, and the MOE is the margin of error.

On a highway, a random sample is taken of the speed, in mph, of 50 cars.

A mean speed is 61.8 mphThe margin of error is +2.3 The confidence interval is 95%

Put the values in the above formula as,

[tex]61.8\pm 2.3\\59.5,641[/tex]

Thus, the interval estimate of the population mean

[tex]59.5 < h < 61.8[/tex]

Hence, the interval estimate of the population mean when a random sample is taken of the speed on highway is 59.5<h<64.1. Option C is correct.

Learn more about the margin of error here;

https://brainly.com/question/10218601

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Answer:

cant its blocked

Step-by-step explanation:

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Answer:

-5x-3

Step-by-step explanation:

-5x+6-9=-5x-3

The inequality that describes all the solutions to the given inequality expression is x > 4

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Expand the right-hand side of the ineqality

-5x + 6 < -6 - 2x

Collect the like terms

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Divide both sides by -3

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Hence the inequality that describes all the solutions to the given inequality expression is x > 4

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What is the value of 20+6•5/-2

Answers

Answer:

The answer is 25

Step-by-step explanation:

6•5=30

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Answers

Answer:

6x+13

Step-by-step explanation:

I hope this is right.

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4x-y = 7

Answers

Answer:

no solutions

Step-by-step explanation:

i guess   im

4|m-n|
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Answers

you would first substitute -7 for m and 2 for n. It would look like this: 4| -7-2 | . we first solve the absolute value because it is the first step in PEMDAS or order of operations. -7-2 is equal to -9. Our equation should look like this now: 4 |-9| . we solve the absolute value portion, the absolute value of a negative number is the the same number but positive. the absolute value would be 9. (we just take the negative symbol off). we now have 4 x 9. This is equal to 36.

36 is the answer.

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Answers

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Answers

AFE=35 degrees because 180=55+90+x

Answer:

∠ AFE = 35°

Step-by-step explanation:

∠ EFD = ∠ BFC = 55° ( vertically opposite angles )

Since BD is a straight line , then

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Answers

Answer:40

Step-by-step explanation:

100+10+10=3x

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Answer:

40

Step-by-step explanation:

add 100+10+10 and divide it by 3

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Answers

Answer:

(3x+1)(2x+1)

Step-by-step explanation:

Answer:

[tex]x2[/tex]=[tex]\frac{5-\sqrt{113} }{8} , x2 = \frac{5+\sqrt{113} }{8}[/tex]

Step-by-step explanation:

hope this help and if you can give me brainliest

The cylinder shown here has a height of 7 centimeters and a radius of 4 centimeters. What is the area of the base of the cylinder? Express your answer in terms of 1. Do not include units (cm2) in your answer. Use pi to represent the n symbol. For example: 321 would be typed as 32pi​

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Answer: 16pi

Step-by-step explanation:

Find the value of x. Your answer must be exact.
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Answers

Answer:

x = 63

Step-by-step explanation:

Simplifying

x + -18 = 45

Reorder the terms:

-18 + x = 45

Solving

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Move all terms containing x to the left, all other terms to the right.

Add '18' to each side of the equation.

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Answers

Answer: Slope: 2/3

y-intercept: 9

Step-by-step explanation:

The slope is equivalent to 2/3 and the y intercept is 9

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Answers

Answer should be “20”

By the way next time just do (0.16+0.24)^2

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Answers

Step-by-step explanation:

For a quadratic equation to have no real roots, the discriminant b² - 4ac must be negative.

For px² + 8x + 2 = 0,

We have a = p, b = 8 and c = 2.

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=> 64 - 8p < 0

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Answers

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Answers

Answer:

x = 4

Step-by-step explanation:

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Answers

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Step-by-step explanation:

4.3 °F > 4 1/4 °F

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Answers

Answer:

7

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Answers

Answer:

30.4%

Step-by-step explanation:

Given data

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Required

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Answers

Answer:

180

Step-by-step explanation:

they are all equal too 180 degrees

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Answer:

the middle sign

Step-by-step explanation:

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Answers

First you add 3x+x because they are like terms.

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Your New Simplified Equation:

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Answers

Answer:

its false

Step-by-step explanation:

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Answers

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Answers

Answer:

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