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Author Question: A population mean is to be estimated from the sample described. Round your answer to one decimal ... (Read 37 times)

tsand2

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on: Jan 18, 2020

Question 1

A population mean is to be estimated from the sample described. Round your answer to one decimal place if necessary. Assume that all confidence intervals use a 95% confidence level.

Sample size = 256, sample mean = 40, sample standard deviation = 13
What is the 95% confidence interval for the population mean?
◦ 38.4 < μ < 41.6
◦ 8 < μ < 18
◦ 39.2 < μ < 40.8
◦ 39.9 < μ < 40.1

Question 2

A population mean is to be estimated from the sample described. Round your answer to one decimal place if necessary. Assume that all confidence intervals use a 95% confidence level.

Sample size = 2500, sample mean = 223, sample standard deviation = 96
What is the 95% confidence interval for the population mean?
◦ 87.1 < μ < 104.9
◦ 222.9 < μ < 223.1
◦ 219.2 < μ < 226.8
◦ 221.1 < μ < 224.9
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Marked as best answer by tsand2 on Jan 18, 2020

duke02

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Reply #1 on: Jan 18, 2020
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tsand2

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Reply 2 on: Jan 18, 2020
YES! Correct, THANKS for helping me on my review

tandmlomax84

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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