A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 909 909 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.29 1.29 hours with a standard deviation of 0.51 0.51 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.
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of
909
909 people age 15 or older, the mean amount of time spent eating or drinking per day is
1.29
1.29 hours with a standard deviation of
0.51
0.51 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.
A.
The distribution of the sample mean will always be approximately normal.
B.
The distribution of the sample mean will never be approximately normal.
C.
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.
D.
Since the distribution of time spent eating and drinking each day is not
Click to select your answer and then click Check Answer.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
