February 23rd, 2017, 08:17 PM  #1 
Newbie Joined: Feb 2017 From: U.S Posts: 1 Thanks: 0  HELP! Please
I am having trouble with a math problem and have attached photos of the problem. How do you find the probability of customer being active? The numbers are given, but I am having a hard time of figuring out on how to get those numbers using the formula.

February 23rd, 2017, 08:45 PM  #2 
Senior Member Joined: May 2016 From: USA Posts: 751 Thanks: 302 
I am trying to read this on a tablet, and the thumbnails are virtually unreadable. Moreover, the supposed definition of N seems really to be the definition of T, and the supposed definition of T seems really to the definition of N so no wonder you are confused. I'll try to decipher this, but make no guarantees. 