I'm a little confused by this problem which seems simple, but I'm not really sure how to solve it.
It says: The number of hamburgers ordered in a day is normally distributed with a Mean of 45 and Standard Deviation of 8.4, Then asks:
What is the probability Distribution (type of distribution, mean and Standard Deviation) of the average hamburgers ordered for 50, 100, 1000 Customers?
Would the type of distribution just be normal for all 3 sizes, or is there a way to calculate the type distribution?
I'm not sure how to calculate the mean and SD for a already given mean and SD, when you are just given what I guess is the sample size. I have a formula to calculate the Standard deviation of the Sample Mean which is:
Standard Deviation / Square root of the sample size
But I'm not sure if these numbers, 50, 100, 1000 are sample mean sizes.
Thanks for any help.