Question: K so here's the problem: Rates of return on stock are independent and normallydistributed with a standard deviation of 1.7 - A sample of 12months

K so here's the problem:

Rates of return on stock are independent and normallydistributed with a standard deviation of 1.7 - A sample of 12months is taken.

a. Find probability that sample standard deviation is lessthan 2.5

b. Find probability that sample standard deviation is morethan 1.0

 

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