A sample of 100 customers of Montana Gas and Electric resulted in the following frequency distribution of

Question:

A sample of 100 customers of Montana Gas and Electric resulted in the following frequency of monthly charges.
Amount ($) Number
0–49 ......... 13
50–99 ......... 22
100–149 ........ 34
150–199 ........ 26
200–249 ........ 5
a. Let A be the event that monthly charges are $150 or more. Find P(A).
b. Let B be the event that monthly charges are less than $150. Find P(B).

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...