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 0.011 of the population mean? Assume that a 98% confidence level is desired. If using the range rule of thumb, can be estimated as 1.25. Does the sample size seem practical? range 5-0 4 4 The required sample size is 85956 (Round up to the nearest whole number as needed.)