3.13 A corporation has just received new machinery that must be installed and checked before it becomes operational.

The accompanying table shows a manager’s probability assessment for the number of days required before the machinery becomes operational.

Let A be the event “it will be more than four days before the machinery becomes operational,” and let B be the event “it will be less than six days before the machinery becomes available.”

a. Find the probability of event A.

b. Find the probability of event B.

c. Find the probability of the complement of event A.

d. Find the probability of the intersection of events A and B.

e. Find the probability of the union of events A and B.

Transcribed Image Text:

Number of days 3 4 5 6 7 Probability 0.08 0.24 0.41 0.20 0.07