Mathematics, 03.12.2021 04:40, jayjinks976

Suppose the mean income of firms in the industry for a year is 85 million dollars with a standard deviation of 9 million dollars. If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn less than 99 million dollars

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Suppose the mean income of firms in the industry for a year is 85 million dollars with a standard de...