Question

A fitness centre collects data on its members and discovers the mean number of visits by its members per year is 46.4, with a standard deviation of 13.7. What is the probability that a member will come less than 15 times in a year?

Answer 1

Calculate a z-score.

\(\dfrac{15 - 46.4}{13.7}\)

And you are on your way.

Answer 2

thnx

Answer 3

-2.29

Answer 4

Okay, now what? Table, Calculator, or fancy Software?

Answer 5

1%

Answer 6

I may have gone with 1.1%, I suppose. Good work.

Answer 7

thnx