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 59 20-29 52 30-39 99 40-49 62 50-59 58 ≥60 50 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 20 but no older than 39? b. What is the probability that the customer is either older than 50 or younger than 30? c. What is the probability that the customer is at least 50?
Added by Jeffrey I.
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We can do this by adding the number of customers in each age group: Total Customers = 59 + 52 + 99 + 62 + 58 + 50 = 380 Now, we can find the probabilities for each question: a. Show more…
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