Mathematics, 04.08.2021 01:50 breannagrd4855
A certain type of automobile battery is known to last an average of 1,170 days with a standard deviation of 150 days. If 900 of these batteries are selected, find the following probabilities for the average length of life of the selected batteries.
(a) The average is between 1150 and 1160.
(b) The average is greater than 1170.
(c) The average is less than 940.
Answers: 2
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