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Author Question: Use the t distribution to construct the confidence interval estimate of the population mean. Round ... (Read 803 times)

debasdf

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on: Jan 18, 2020

Question 1

Use the t distribution to construct the confidence interval estimate of the population mean. Round the confidence interval estimates to one decimal place unless indicated otherwise.

A simple random sample of 30 households was selected from a particular neighborhood. The number of cars for each household is shown below. Construct the 95% confidence interval estimate of the population mean.



◦ 1.5 cars < μ < 1.9 cars
◦ 1.0 cars < μ < 2.0 cars
◦ 1.3 cars < μ <  1.7 cars
◦ 1.1 cars < μ < 1.9 cars

Question 2

Use the t distribution to construct the confidence interval estimate of the population mean. Round the confidence interval estimates to one decimal place unless indicated otherwise.

How tall is your average statistics classmate? To determine this, you measure the height of a simple random sample of 38  fellow students, finding a mean height of 68 inches and a standard deviation of
2.3 inches. Construct the 95% confidence interval estimate of the population mean.
◦ 68.2 in. < μ <   68.8 in.
◦ 67.2 in. < μ <   68.8 in.
◦ 67.2 in. < μ <   69.8 in.
◦ 68.2 in. < μ <   69.8 in.
Statistical Reasoning for Everyday Life ¦ Bennett, Briggs, Triola ¦ 5th Edition
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Marked as best answer by debasdf on Jan 18, 2020

memslove

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Reply #1 on: Jan 18, 2020
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debasdf

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Reply 2 on: Jan 18, 2020
Great answer, keep it coming :)

mochi09

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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