Statistics Problems

5/8/2019 Assignment Print View

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8. Award: 0.20 points    

Recent statistics suggest that 15% of those who visit a retail site on the World Wide Web make a purchase. A retailer wished to verify this claim. To do so, she selected a sample of 16 "hits" to her site and found that 4 had actually made a purchase. a. What is the likelihood of exactly four purchases? (Round your answer to 4 decimal places.)

Likelihood

b. How many purchases should she expect? (Round your answer to 1 decimal place.)

Expected purchases

c. What is the likelihood that four or more "hits" result in a purchase? (Round your answer to 2

decimal places.)

Likelihood

References

Worksheet Difficulty: 1 Basic Learning Objective: 06-04 Explain the assumptions of the binomial distribution and apply it to calculate probabilities.