# Question: According to IDC 70 of smartphones in the world use

According to IDC, 70% of smartphones in the world use Google’s Android operating system in the fourth quarter of 2012. Answer the following questions based on a random sample of 14 smartphone users.

a. What is the probability that exactly nine people from this sample have a smartphone using the Android operating system?

b. What is the probability that all 14 people from this sample have a smartphone using the Android operating system?

c. What is the probability that 11 or fewer people from this sample have a smartphone using the Android operating system?

d. What are the mean and standard deviation for this distribution? e. Construct a histogram for this distribution.

a. What is the probability that exactly nine people from this sample have a smartphone using the Android operating system?

b. What is the probability that all 14 people from this sample have a smartphone using the Android operating system?

c. What is the probability that 11 or fewer people from this sample have a smartphone using the Android operating system?

d. What are the mean and standard deviation for this distribution? e. Construct a histogram for this distribution.

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