~ 13 ~ 16) A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 1017 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.26 hours with a standard deviation of 0.58 hours. (a) Determine a 90% confidence interval for the mean amount of time Americans age 15 or older spend eating and drinking each day. Round final answer to four decimal places. (b) What does this 90% confidence interval mean as far as future data is concerned? (c) Determine a 95% confidence interval for the mean amount of time Americans age 15 or older spend eating and drinking each day. Round final answer to four decimal places. (d) Could either of these intervals be used to estimate the mean amount of time a 10 -year old spends eating and drinking each day? Why or why not