Author Question: A barbershop requires appointments for perms and hair cuts. Ten percent of those making appointments ... (Read 113 times)

WWatsford · **on:** Jun 24, 2018

A barbershop requires appointments for perms and hair cuts. Ten percent of those making appointments cancel or simply fail to show up. Next week's appointment calendar has 64 appointments. Let x be the number of missed appointments out of the 64 . The probability that more than 3 cancellations and/or no-shows will occur during the next week is:
a. 0.3784
b. 0.8937
c. 0.7795
d. 0.9611
e. 0.1063

Question 2

Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population is taken. The probability that less than 2 of the 5 are 65 years or older is:
a. 0.8533
b. 0.1467
c. 0.4704
d. 0.3829
e. None of these.