Question 2

According to IDC, 63% of smartphone shipments in the world were Apple in the fourth quarter of 2022. Answers the following questions based on a random sample of 14 smartphone shipments to customers.

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1. What is the probability that exactly 4 people from this sample have an Apple smartphone?
2. What is the probability that all 14 people from this sample have an Apple smartphone?
3. What is the probability that 12 or fewer people from this sample have an Apple smartphone?
4. What are the mean and standard deviation for this distribution?

Question 3

John is an employee at a customer service call center for a large retail company. Historically, John has averaged 43 complaint calls per day. Assume the number of calls that John completes per day follows the Poisson distribution.

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1. What is the probability that John will complete 47 complaint calls tomorrow?
2. What is the probability that John will complete fewer than 34 complaint calls tomorrow?
3. What is the probability that John will complete more than 40 complaint calls tomorrow?
4. What is the mean and standard deviation for this distribution?