7. 7. A utility company asked
50 of its customers whether
they pay their bills online or
by mail. What is the
probability that a customer
pays the bill by mail, given
that the customer is female?
Online
By
Mail
I
Male
Female
12
24
INILA

Probability that a customer pays the bill by mail, given that the customer is female is 0.20.

Step-by-step explanation:

The complete question is:

                               Online                             By Mail            Total

             Male             12                                      8                   20

           Female           24                                     6                   30      

             Total             36                                     14                  50    

A utility company asked 50 of its customers whether they pay their bills online or by mail. What is the probability that a customer pays the bill by mail, given that the customer is female.

Probability that a customer pays the bill by mail, given that the customer is female is given by = P(Pays bill by mail / Customer is female)

P(Pays bill by mail/Customer is female) =

Now, Probability that customer is female =  

Also, Probability that customer pays bill by mail and is female =  

So, Required probability =  

                                         =  

                                         =     =  0.20

Hence, probability that a customer pays the bill by mail, given that the customer is female is 0.20.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.