Homework: Ch9 HW One Sample Confidence Intervals Question 18, 9.2.28.T Part 4 of 4 HW Score: 96.57%, 23.18 of 24 points O Points: ofl Save A nutritionist wants to determine now much time nationally people spend eating and drinking. Suppose tor a random sample ot 1014 people age 15 or older, the mean amount ot time spent eating or drinking per day is 1.04 hours witn a standard deviation of 053 hour. Complete parts (a) through (d) below. I ne alstnoutlon or me sample mean Will never oe approximately normal. Since the distribution ottime spent eating and drinking each day is normally distributed, the sample must be large so that the distribution ot the sample mean will be approximately normal. (b) There are more than 200 million people nationally age 15 or older. Explain why this, along witn the fact that the data were obtained using a random sample, satisfies the requirements for constructing a confidence interval The sample size is greater than 5% ot the population. The sample size is less than 10% ot the population. The sample size is greater than 10% ot the population. The sample size is less than 5% ot the population. (c) Determine and interpret a 90% confidence interval tor the mean amount ot time Americans age 15 or older spend eating and drinking each day. Select the correct choice below and till in the answer boxes, f applicable, in your choice. (Type integers or decimals rounded to three decimal places as needed. IJse ascending order.) The nutritionist is 90% confident that the mean amount ot time spent eating or drinking per day is beeen 1.013 and 1.067 hours. There is a 90% probability that the mean amount ot time spent eating or drinking per day is between and hours. The nutritionist is 90% confident that the amount ot time spent eating or drinking per day tor any individual is between The requirements tor constructing a confidence interval are not satisfied. (d) Could the interval be used to estimate the mean amount ot time a 9-year-old spends eating and drinking each day? Explaim and hours. O o O o o A. B. C. D. E. No; the interval is about people age 15 or older. The mean amount ot time spent eating or drinking per day for 9-year-olds may differ. Yes; the interval is about the mean amount of time spent eating or drinking per day tor people people age 15 or older and can be used to tind the mean amount ot time spent eating or drinking per day for 9-year-olds. Yes; the interval is about individual time spent eating or drinking per day and can be used to find the mean amount ot time a 9-year-old spends eating and drinking each day. No; the interval is about individual time spent eating or drinking per day and cannot be used to find the mean time spent eating or drinking per day for specific age. A confidence interval could not be constructed in pan (c).