Solution-The time it takes a cell to divide called mitosis

The time it takes a cell to divide (called mitosis) is normally distributed with an average time of one hour and a standard deviation of 5 minutes.

a) What is the probability that a cell divides in less than 45 minutes?

b) What is the probability that it takes a cell more than 65 minutes to divide?

c) What is the time that it takes approximately 99% of all cells to complete mitosis?

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