Question

A researcher is interested in estimating the mean weight of a semi tracker truck to determine...

A researcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity. She takes a random sample of 36 trucks and computes a sample mean of 20,000 pounds with sample variance of 1,600. The 95% confidence interval for the population mean weight of a semi tracker truck is ______________.

19,429 to 20,761

19,229 to 20,211

18,229 to 20,771

19,229 to 20,771

19,987 to 20,013

Homework Answers

Answer #1

The sample standard deviation is

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Correct option is

19,987 to 20,013

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