Mathematics, 26.11.2019 06:31, xxtonixwilsonxx

Acertain type of automobile battery is known to last an average of 1140 days with a standard deviation of 80 days. if 400 of these batteries are selected, find the following probabilities for the average length of life of the selected batteries. (round your answers to four decimal places.)

(a) the average is between 1128 and 1140.

(b) the average is greater than 1152.

(c) the average is less than 940.

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Acertain type of automobile battery is known to last an average of 1140 days with a standard deviati...