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2 answers:
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Answer:
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: a)
b)
c)
Step-by-step explanation:
Given : Number of students : 11
Number of faculty members : 13
Total persons :
Total number of ways to structure a jury of six people from a group of 24 people :-
a) Number of ways of selecting a jury of all students :-
Then , the probability of selecting a jury of all students :-
b) Number of ways of selecting a jury of all faculty :-
Then , the probability of selecting a jury of all students :-
c) Number of ways of selecting a jury of two students and four faculty :-
Then , the probability of selecting a jury of all students :-