Mathematics, 03.06.2021 03:20 pillgiing

The average life-span of a True Test auto battery is 42 months with a standard deviation of 4 months. Assume a normal distribution.
We can expect 95% of the batteries to last between Answer
and Answer
months.
We can expect % of the batteries to last less than 30 months.
We can expect % of the batteries to last longer than 42 months.
We can expect % of the batteries to last between 30 and 38 months.
We can expect
% of the batteries to last between 42 and 50 months

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The average life-span of a True Test auto battery is 42 months with a standard deviation of 4 month...

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