A furniture manufacturer has found that the time spent by workers assembling a particular table follows a normal distribution with a mean of 150 minutes and a standard deviation of 40 minutes. a. The probability is 0.9 that a randomly chosen table requires more than how many minutes to assemble? b. The probability is 0.8 that a randomly chosen table can be assembled in fewer than how many minutes? c. Two tables are chosen at random. What is the probability that at least one of them requires at least 2 hours to assemble?

A furniture manufacturer has found that the time spent by workers assembling a particular table follows a normal distribution with a mean of 150 minutes and a standard deviation of 40 minutes. a. The probability is 0.9 that a randomly chosen table requires more than how many minutes to assemble? b. The probability is 0.8 that a randomly chosen table can be assembled in fewer than how many minutes? c. Two tables are chosen at random. What is the probability that at least one of them requires at least 2 hours to assemble?

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.

Chapter13: Probability And Calculus

Section13.3: Special Probability Density Functions

Problem 40E: Pygmy Height The average height of a member of a certain tribe of pygmies is 3.2ft, with a standard...

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