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(Solved): 7. Quality control for Speedie Printers has done studies that show that their basic model has a lif ...




7. Quality control for Speedie Printers has done studies that show that their basic model has a lifetime that is normally dis
7. Quality control for Speedie Printers has done studies that show that their basic model has a lifetime that is normally distributed with a mean life of 3.5 years and a standard deviation of 7 years. Draw a picture of the distribution function; show the locations of the mean, mean , and the mean along the -axis. Shade in the area. At the prescribed usage, how long should the warranty be if the company wishes to replace no more than during the warranty period? Write down the calculator command used.


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To draw the distribution function, we can use a bell curve, which represents a normal distribution. The mean of the distribution is at 3.5 years, and
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