Mathematics, 21.01.2020 23:31, gingerham1

The lifetime of a 2-volt non-rechargeable battery in constant use has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. the proportion of batteries with lifetimes exceeding 520 hours is approximately

a. 0.4207
b. 0.2000
c. 0.5793

Answers: 2

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The lifetime of a 2-volt non-rechargeable battery in constant use has a normal distribution with a m...