Question

According to a Consumer Report, the mean replacement time of a television is 8.2 years with...

According to a Consumer Report, the mean replacement time of a television is 8.2 years with a standard deviation of 1.1 years. The distribution of TV replacement times is approximately Normal. Use a table or technology for each question. Include an appropriately labeled Normal curve for each part. There should be three separate curves.

  1. What is the probability that a person will replace thei

    According to a Consumer Report, the mean replacement time of a television is 8.2 years with a standard deviation of 1.1 years. The distribution of TV replacement times is approximately Normal. Use a table or technology for each question. Include an appropriately labeled Normal curve for each part. There should be three separate curves

  2. What is the probability that a person will replace their TV before 3 years?
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Answer #1

## using ti-83 calculator.

And using EXCEL command...

NORM.S.DIST(-4.73) = 0.000001122599185 0

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