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


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:

6x+13

Step-by-step explanation:

I hope this is right.

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36 is the answer.

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Answer:

(q + r) (m - p)

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

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

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х
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Answers

Answer:

x = 63

Step-by-step explanation:

Simplifying

x + -18 = 45

Reorder the terms:

-18 + x = 45

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-18 + x = 45

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Step-by-step explanation:

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Answer:

180

Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

Given data

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new price= $318

Required

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Answers

Answer:

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Step-by-step explanation:

i guess   im

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Answer should be “20”

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Answer:

12

Step-by-step explanation:

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Answers

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Answers

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4x-7=10  

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Answers

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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.

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