The manager of a computer retails store is concerned that his suppliers have been givir computers with lower than average quality. His research shows that replacement times model laptop of concern are normally distributed with a mean of 4.3 years and a stand. He then randomly selects records on 45 laptops sold in the past and finds of 0.6 years. mean replacement time is 4.1 years. Assuming that the laptop replacement times have a mean of 4.3 years and a standard c 0.6 years, find the probability that 45 randomly selected laptops will have a mean replae of 4.1 years or less. P(M < 4.1 years) = Enter your answer as a number accûrate to 4 decimal places. NOTE: Answers obtained scores or z-scores rounded to 3 decimal places are accepted.

The manager of a computer retails store is concerned that his suppliers have been givir computers with lower than average quality. His research shows that replacement times model laptop of concern are normally distributed with a mean of 4.3 years and a stand. He then randomly selects records on 45 laptops sold in the past and finds of 0.6 years. mean replacement time is 4.1 years. Assuming that the laptop replacement times have a mean of 4.3 years and a standard c 0.6 years, find the probability that 45 randomly selected laptops will have a mean replae of 4.1 years or less. P(M < 4.1 years) = Enter your answer as a number accûrate to 4 decimal places. NOTE: Answers obtained scores or z-scores rounded to 3 decimal places are accepted.

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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