Harsh P. answered • 08/27/20
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New to Wyzant
1 - Pr(X<=451)
1 - Pr(Z<= (451-450)/27)
1 - Pr(Z<= 0.037)
1 - 0.5160 = 0.4840
Delaney D.
asked • 05/05/20Probability and Statistics-Normal Distribution
The life of a battery is normally distributed with a mean of 450 days and a standard deviation of 27 days. What percent of batteries last longer than 451 days? Round your answer to the nearest tenth.
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