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:

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Step-by-step explanation:

I hope this is right.

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Step-by-step explanation:

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

3x+x-7=10  

Your New Simplified Equation:

4x-7=10  

Now, you have to take out the -7 by adding a positive 7. Also you                          have to add +7 on the other side so add 7 to 10.

Your New Simplified Equation:

4x=17      Now, you divide both sides by 4.

Your New Simplified Equation:

x= 17/4 So, that's your answer :)

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Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

x+5x<12

x+5x=12

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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

Answer:

(q + r) (m - p)

Explanation:

-pq - pr + mq + mr​Factor out common term 'p'

= -p(q + r) + mq + mr

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Factor out common term '(q + r)'

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Christina needed 8 pounds of flour to make cookies that will
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Answers

Answer:

12

Step-by-step explanation:

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Answers

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Answer:

∠ AFE = 35°

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Since BD is a straight line , then

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Step-by-step explanation:

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Answers

Answer:

x = 63

Step-by-step explanation:

Simplifying

x + -18 = 45

Reorder the terms:

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

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Answers

Answer:

30.4%

Step-by-step explanation:

Given data

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Answers

Answer:

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Step-by-step explanation:

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Answers

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Answers

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Answers

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

Step-by-step explanation:

Answer:

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Step-by-step explanation:

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Answers

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Step-by-step explanation:

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Washington, DC, was warmer in February (4.3°F)than in December (44°F). Write an inequality for this relationship.

Answers

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Step-by-step explanation:

4.3 °F > 4 1/4 °F

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Answers

Answer:

x = 4

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Answers

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Learn more here: https://brainly.com/question/15816805

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Answers

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