A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a rarndom sarhple of 1060 pcople age 15 or older, the mean amount of time spent oating or drinking per day is 1.95 hours with a standard deviation of 0.51 hour. Complete parts (a) through (d) below. (a) A histogram of time spent oating and drinking each day is skewed right. Usc this result to explain why a large sample size is needed to construct a conficerce interval for the mean time spent cating and drinking each day O A. The distribution of the sample mean will always be approximately normal O B. Since the distribution of time spent eating and drinking each day is normaly distributed, the sample must be large so that the distnbulion of the sample mean will be approximately normal. O C. Since the distribution of time spent eating and drinking cach day is not normaly distributed (skeverd right), the sample riust be laige so that the distrbution of the sample mean will be approximately normal. O D. The distribution of the sample mean will never be approximately ormal (b) There are more than 200 million people nnationally age 15 or older. Explain why this, along with the lact thal the data were obtained using a random sample, satisfies the requirements for constructing a confidence interval. O A. The sample size is less than 10% of the population O B. The sample size is greater tharn 5% of the population. OC. The sample size is less than 5% of the population. O D. The sample size is greater than 10% of the population (C Determine and interpret a 95% confidence interval for the meari amount of time Ainericans age 15 or older spend eating and drinking each day Select the correct choice below and fill in the answer boxes, if applicable, in your cho ce (Type integers or docimals rounded to three decimal places as needed. Use accend ng oider) hours O A. The nutritionist is 95% confident that the mean amount of time spent eating or rirink ng per day is betweeri and Next Statcrunch
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a rarndom sarhple of 1060 pcople age 15 or older, the mean amount of time spent oating or drinking per day is 1.95 hours with a standard deviation of 0.51 hour. Complete parts (a) through (d) below. (a) A histogram of time spent oating and drinking each day is skewed right. Usc this result to explain why a large sample size is needed to construct a conficerce interval for the mean time spent cating and drinking each day O A. The distribution of the sample mean will always be approximately normal O B. Since the distribution of time spent eating and drinking each day is normaly distributed, the sample must be large so that the distnbulion of the sample mean will be approximately normal. O C. Since the distribution of time spent eating and drinking cach day is not normaly distributed (skeverd right), the sample riust be laige so that the distrbution of the sample mean will be approximately normal. O D. The distribution of the sample mean will never be approximately ormal (b) There are more than 200 million people nnationally age 15 or older. Explain why this, along with the lact thal the data were obtained using a random sample, satisfies the requirements for constructing a confidence interval. O A. The sample size is less than 10% of the population O B. The sample size is greater tharn 5% of the population. OC. The sample size is less than 5% of the population. O D. The sample size is greater than 10% of the population (C Determine and interpret a 95% confidence interval for the meari amount of time Ainericans age 15 or older spend eating and drinking each day Select the correct choice below and fill in the answer boxes, if applicable, in your cho ce (Type integers or docimals rounded to three decimal places as needed. Use accend ng oider) hours O A. The nutritionist is 95% confident that the mean amount of time spent eating or rirink ng per day is betweeri and Next Statcrunch
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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