Question

Suppose that for a random sample of 1001 Americans age 15 or older, the mean amount of time spent eating or drinking per day is 1.22 hours with a standard deviation of 0.65 hours. (a) Use StatCrunch to construct a 95% confidence interval for the mean amount of time that Americans spend eating and drinking per day, (b) Interpret the confidence interval that you constructed in part (a).

Answer 1

To answer the student's question, one can calculate a 95% confidence interval for the average eating or drinking time of Americans using the given sample statistics, and interpret it to estimate the range in which the true population mean is likely to fall.

Step-by-step explanation:

The student's question pertains to constructing a 95% confidence interval for the mean amount of time that Americans age 15 or older spend eating and drinking per day, based on a given sample with a mean of 1.22 hours and a standard deviation of 0.65 hours from a sample size of 1001.

To construct the confidence interval using StatCrunch (or any other statistical software), one would typically:

The confidence interval provides a range within which we expect the true population mean to fall 95% of the time.