The Baily Hill Bicycle Shop sells mountain bikes and offers a maintenance program to its customers. The manager has found the average repair bill during
a. What is the probability a random sample of 40 customers will have a mean repair cost exceeding $16.00?
b. What is the probability the mean repair cost for a sample of 100 customers will be between $15.10 and $15.80?
c. The manager has decided to offer a spring special. He is aware of the mean and standard deviation for repair bills last year. Therefore, he has decided to randomly select and repair the first 50 bicycles for $14.00 each. He notes this is not even 1 standard deviation below the mean price to make such repairs. He asks your advice. Is this a risky thing to do? Based upon the probability of a repair bill being $14.00 or less, what would you recommend? Discuss.
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a P 1600 Pz 1600 1530 7 Pz 063 05 02357 02643 b P1510 1580 P151015307 z 158015307 P029 z 071 0... View full answer
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Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
9th Edition
013302184X, 978-0133021844
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