OpenStax, Statistics §8.2 A Single Population Mean Using the Student's t-Distribution · Exercise 36 · Statistics · Confidence intervals
A Single Population Mean Using the Student's t-Distribution · Exercise 36
A quality control specialist for a restaurant chain takes a random sample of size 12 to check the amount of soda served in the 16-oz serving size. The sample mean is 13.30, with a sample standard deviation of 1.55. Assume the underlying population is normally distributed.
Find the 95 percent confidence interval for the true population mean for the amount of soda served.
(a) (12.42, 14.18)
(b) (12.32, 14.29)
(c) (12.50, 14.10)
(d) Impossible to determine
OpenStax, Statistics · §8.2 A Single Population Mean Using the Student's t-Distribution · Exercise 36
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