, 02.12.2019 23:30

# Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standard deviation of 2 days. find the probability that a butterfly will live between 12.04 and 18.38 days. a) 0.4164 b) 0.4203 c) 0.5828 d) 0.3893 e) 0.4202 f) none of the above.

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