he life of Philips voice recorder is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A voice recorder is guaranteed for 3 years. We are interested in the length of time a voice recorder lasts.   Find the probability that a voice recorder will break down during the guarantee period. P(0 < χ <                           ["", ""]            ) =                           ["", ""]            (Use zero (0) for the minimum value of x.)   Find the probability that a voice recorder will last between 2.8 and 6 years. P(                           ["", "", ""]            < χ <                           ["", "", ""]            ) =                           ["", "", ""]              Find the 70th percentile of the distribution for the time a voice recorder lasts. P(χ < ƙ)=                           ["", ""]            . Therefore, ƙ=                           ["", ""]

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he life of Philips voice recorder is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A voice recorder is guaranteed for 3 years. We are interested in the length of time a voice recorder lasts.

 

Find the probability that a voice recorder will break down during the guarantee period.

P(0 < χ <                           ["", ""]            ) =                           ["", ""]            (Use zero (0) for the minimum value of x.)

 

Find the probability that a voice recorder will last between 2.8 and 6 years.

P(                           ["", "", ""]            < χ <                           ["", "", ""]            ) =                           ["", "", ""]           

 

Find the 70th percentile of the distribution for the time a voice recorder lasts.

P(χ < ƙ)=                           ["", ""]            . Therefore, ƙ=                           ["", ""]           

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