Question: I'm going to put c on another question so just a and b please III Quiz: Ch 9 Quiz: One Sample Confidence Intervals v Question

I'm going to put c on another question so just a and b please

I'm going to put c on another question so just a and

III Quiz: Ch 9 Quiz: One Sample Confidence Intervals v Question 2 of 10 > This quiz: 10 point(s) possible This question: 1 point(s) possible Submit quiz A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 993 people age 15 or older, the mean amount of time spent eating or drinking per day is 147 hours with a standard deviation of 0.52 hour. Complete parts (a) through (d) below. (a) A histogram of time spent eating and drinking each day is skewed right. Use this result to explain why a large sample size is needed to construct a confidence interval for the mean time spent eating and drinking each day. O A. The distribution of the sample mean will never be approximately normal. O B. Since the distribution of time spent eating and drinking each day is not normally distributed (skewed right), the sample must be large so that the distribution of the sample mean will be approximately normal." O C. The distribution of the sample mean will always be approximately normal. O D. Since the distribution of time spent eating and drinking each day is normally distributed, the sample must be large so that the distribution of the sample mean will be approximately normal. (b) There are more than 200 million people nationally age 15 or older. Explain why this, along with the fact that the data were obtained using a random sample, satisfies the requirements for constructing a confidence interval O A. The sample size is greater than 5% of the population. O B. The sample size is less than 10% of the population. O C. The sample size is greater than 10% of the population. OD. The sample size is less than 5% of the population. (c) Determine and interpret a 99% confidence interval for the mean amount of time Americans 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 choice. (Type integers or decimals rounded to three decimal places as needed, Use ascending order ) Next Statcrunch

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!