Company Xyz Know That Replacement Times For The Dvd Players It Produces Are Normally Distributed With A Mean Of 4 5 Year 1 (62.87 KiB) Viewed 13 times
Company XYZ know that replacement times for the DVD players it produces are normally distributed with a mean of 4.5 years and a standard deviation of 1.5 years. Find the probability that a randomly selected DVD player will have a replacement time less than 1.4 years? P(X < 1.4 years) = .002 X Enter your answer accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. Company XYZ know that replacement times for the DVD players it produces are normally distributed with a mean of 5.5 years and a standard deviation of 1.6 years. If the company wants to provide a warranty so that only 0.8% of the DVD players will be replaced before the warranty expires, what is the time length of the warranty? warranty = years Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
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