Estimate the population mean by finding a 99.9% confidence interval given a sample of size 70, with a mean of 17.4 and a standard deviation of 13.7. Preliminary: a. Is it safe to assume that n < 0.05 of all subjects in the population? O No O Yes b. Is n 30? O No O Yes

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Estimate the population mean by finding a 99.9% confidence interval given a sample of size 70, with a
mean of 17.4 and a standard deviation of 13.7.
Preliminary:
a. Is it safe to assume that n < 0.05 of all subjects in the population?
O No
O Yes
b. Is n > 30?
O No
O Yes
Confidence Interval: What is the 99.9% confidence interval to estimate the population mean? Enter
your answer as an open-interval (i.e., parentheses) accurate to one decimal place.
99.9% C.I. =
y tu
Transcribed Image Text:Estimate the population mean by finding a 99.9% confidence interval given a sample of size 70, with a mean of 17.4 and a standard deviation of 13.7. Preliminary: a. Is it safe to assume that n < 0.05 of all subjects in the population? O No O Yes b. Is n > 30? O No O Yes Confidence Interval: What is the 99.9% confidence interval to estimate the population mean? Enter your answer as an open-interval (i.e., parentheses) accurate to one decimal place. 99.9% C.I. = y tu
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