Save Homework: Ch-7 Review Homework Score: 0 of 1 pt (1 complete ) D W Score: 5.88... 7.2.31-T 10 of 17 (1 complete) Question Help v 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 range 5-O the range rule of thumb, o can be estimated as = 1.25. Does the sample 4 size seem practical? 4 The required sample size is (Round up to the nearest whole number as needed.)​