Question

The mean percentage of a population of people eating out at least once a week is 57%, with a standard deviation of 3.5%. Assume that a sample size of 40 people was surveyed from the population an infinite number of times. In which interval will 95% of the sample means occur?
Select one of the options below as your answer:
A. 55.89% – 58.11%
B. 56.45% – 57.55%
C. 56.54% – 57.46%
D. 56.07% – 57.93%
E. 55.34% – 58.669%

Answer 1

@whpalmer4

Answer 2

pleasehelp

Answer 3

I see that @kropot72 already answered this, and you just had to do as instructed to evaluate the answer. Why didn't you do so?