6. A department store sells refrigerators from four manufacturers: 40% from Company A, 25% from Company B, 15% from Company C, and the rest come from Company D. Suppose 10% of the refrigerators from Company A, 20% from Company B, 5% from Company C, and 25% from company D last more than 15 years. a) What is the probability that a refrigerator purchased from this department store lasts more than 15 years? Show all work and express your answer as a decimal. P(D)=0.2 P(Last than more than 15 years)

6. A department store sells refrigerators from four manufacturers: 40% from Company A, 25% from Company B, 15% from Company C, and the rest come from Company D. Suppose 10% of the refrigerators from Company A, 20% from Company B, 5% from Company C, and 25% from company D last more than 15 years. a) What is the probability that a refrigerator purchased from this department store lasts more than 15 years? Show all work and express your answer as a decimal. P(D)=0.2 P(Last than more than 15 years)

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter12: Probability

Section12.3: Conditional Probability; Independent Events; Bayes' Theorem

Problem 42E

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