A store manager gathers some demographic information from the store's customers. The following chart summarizes the age-related information they collected: Number of Customers Age < 20 91 20-29 72 30-39 78 40-49 80 50-59 81 > 60 95 One customer is chosen at random for a prize giveaway. (Round answers to 4 decimal places.) a. What is the probability that the customer is at least 30 but no older than 49? b. What is the probability that the customer is either older than 59 or younger than 20? c. What is the probability that the customer is at least 50?
A store manager gathers some demographic information from the store's customers. The following chart summarizes the age-related information they collected: Number of Customers Age < 20 91 20-29 72 30-39 78 40-49 80 50-59 81 > 60 95 One customer is chosen at random for a prize giveaway. (Round answers to 4 decimal places.) a. What is the probability that the customer is at least 30 but no older than 49? b. What is the probability that the customer is either older than 59 or younger than 20? c. What is the probability that the customer is at least 50?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:A store manager gathers some demographic information from the store's customers. The following chart
summarizes the age-related information they collected:
Age
Number of Customers
< 20
91
20-29
72
30-39
78
40-49
80
50-59
81
> 60
95
One customer is chosen at random for a prize giveaway. (Round answers to 4 decimal places.)
a. What is the probability that the customer is at least 30 but no older than 49?
b. What is the probability that the customer is either older than 59 or younger than 20?
c. What is the probability that the customer is at least 50?
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