# Question

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.

## Answer to relevant Questions

Consider a Poisson probability distribution with l = 3.0. Determine the following probabilities. a. P(x = 3) b. P(x < 2) c. P(x > 4) A particular intersection in Delaware is equipped with a surveillance camera. The number of traffic tickets issued to drivers passing through the intersection follows the Poisson distribution and averages 4.5 per month. ...An urn contains six blue balls and eight yellow balls. If four balls are selected randomly without being replaced, what is the probability that of the balls selected, three of them will be blue and one of them will be ...A survey was conducted to determine the number of cats living in individual households. The results are summarized in the following table: Number of Cats Probability 0 ....... 0.37 1 ....... 0.28 2 ....... 0.21 3 ...A survey recorded the number of children 18 years old or younger who lived in 200 households. The following table shows the results: Number of Children Number of Families 0 ............. 88 1 ............. 40 2 ...Post your question

0