69. In Exercise 59, consider the following additional information on credit card usage: 70% of all regular
Question:
69. In Exercise 59, consider the following additional information on credit card usage:
70% of all regular fill-up customers use a credit card.
50% of all regular non-fill-up customers use a credit card.
60% of all plus fill-up customers use a credit card.
50% of all plus non-fill-up customers use a credit card.
50% of all premium fill-up customers use a credit card.
40% of all premium non-fill-up customers use a credit card.
Compute the probability of each of the following events for the next customer to arrive (a tree diagram might help).
a. {plus and fill-up and credit card}
b. {premium and non-fill-up and credit card}
c. {premium and credit card}
d. {fill-up and credit card}
e. {credit card}
f. If the next customer uses a credit card, what is the probability that premium was requested?
Step by Step Answer:
Probability And Statistics For Engineering And The Sciences
ISBN: 9781133169345
8th Edition
Authors: Jay L Devore, Roger Ellsbury