Question

How much time do Americans spend eating or drinking? Suppose for a random sample of 1000 Americans age 15 or older, the mean amount of time spent eating or drinking per day is 1.41 hours with a standard deviation of 0.82 hour.

a) Determine a 95% confidence interval for the mean amount of time Americans age 15 or older spend eating and drinking each day

b) Could the interval be used to estimate the mean amount of time a 9 year old American spends eating and drinking each day. Explain

Answer 1