THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 87

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A random sample of 10 stock market mutual funds was taken.Suppose that rates of returns on the population of stock market mutual funds follow a normal distribution.
-Suppose that a sample of 20 mutual funds had been taken.Without doing the calculations,indicate how this would change the 95% interval for the population variance when a random sample of 10 stock market mutual funds was taken.

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