TV Warranty Replacement times for the bulbs on a DLP rear projection TV set are normally distributed

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TV Warranty Replacement times for the bulbs on a DLP rear projection TV set are normally distributed with a mean of 2 years and a standard deviation of 0.6 years.

Using the standard normal table, what is the probability that a randomly selected bulb on a DLP rear projection TV set has replacement time less than 1 year?

Using the 68-95-99.7 rule, approximately what percentage of randomly selected bulbs on a DLP rear projection TV set have replacement time less than 0.8 years?

Posted Date: May 19, 2024 03:14 AM

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TV Warranty Replacement times for the bulbs on a DLP rear projection TV set are normally distributed

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