Question:
Battery lifetime is normally distributed for large samples.
Last updated: 7/11/2022
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Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days and the standard deviation is 61 days. a) Find the distribution by filling in the blanks: X~N( ) b) Find the probability of batteries that have lifetimes longer than 561 days? Round to 4 decimals. c) Find the probability of batteries that have lifetimes at most 497 days? Round to 4 decimals. d) Find the 75th percentile. Round to 1 decimal.