The Nobb Door Company manufactures doors for recreational vehicles
MNS601 – HOMEWORK ASSIGNMENT #2
Question 1 -The Nobb Door Company manufactures doors for recreational vehicles. It has two conflicting objectives: It wants to build doors as small as possible to save on material costs, but to preserve its good reputation with the public, it feels obligated to manufacture doors that are tall enough for 95% of the adult population in the U.S. to pass through without stooping. In order to determine the height at which to manufacture doors, Nobb is willing to assume that the height of adults in America is normally distributed with a mean (µ) of 73 inches and standard deviation (σ) of 6 inches. How tall should Nobb’s doors be?
Question 2 .A recent study of how Americans spend their leisure time surveyed workers employed more than 5 years. They determined the probability an employee has 2 weeks of vacation time to be 0.45, 1 week of vacation time to be 0.10, and 3 or more weeks to be 0.20. Suppose 10 workers are selected at random. What is the probability that 8 workers have 2 weeks of vacation time?
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