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What is the probability that sara will sell five extended

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Reference no: EM132846526

Question 1

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

  1. What is the probability that exactly 9 people from this sample have a smartphone using the Android operating system?
  2. What is the probability that all 14 people from this sample have a smartphone using the Android operating system?
  3. What is the probability that 11 or fewer people from this sample have a smartphone using the Android operating system?
  4. What are the mean and standard deviation for this distribution?

Question 2

Sara is a salesperson for Camera's Etc. which is a retailer for high-end digital cameras. Historically, Sara has averaged selling 2.1 extended warranties per day for cameras that she sell. Assume the number of camera warranties that Sara sells per day follows the Poisson distribution.

  1. What is the probability that Sara will sell five extended warranties tomorrow?
  2. What is the probability that Sara will not sell an extended warranty tomorrow?
  3. What is the probability that Sara will sell more than two extended warranties tomorrow?
  4. What is the standard deviation for this distribution?

Reference no: EM132846526

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