Can you pleae help with this question? Assume that all​ grade-point averages are to be standardized on a scale between 0 and 5. How many​ grade-point averages must be obtained so that the sample mean is within 0.015 of the population​ mean? Assume that a 99​% confidence level is desired. If using the range rule of​ thumb, sigmaσ can be estimated as range/4 = 5-0/4= 1.25  1. What is the required sample size?___ 2.Does the sample size seem​ practical? a. No, because the required sample size is a fairly small number. b. No, because the required sample size is a fairly large number. c. Yes, because the required sample size is a fairly small number. d. Yes, because the required sample size is a fairly large number.

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