Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table below to find the minimum sample size needed to be 95% confident that the sample standarddeviations is within 20% of a. Is this sample size practical?6To be 95% confident that s iswithinof the value of a, the sample sizen should be at leastTo be 99% confident that s iswithinof the value of a, the sample sizein should be at leastThe minimum sample size needed is1% 5%19,205 7681%10% 20% 30% 40% 50%48 21 12 830% 40% 50%22 141925% 10% 20%33,218 1,336 33685 38C

Introduction: It is required to find the minimum sample size from the given table.

Assume that the sample is a simple random sample obtained from a normally distributed population of IQ scores of statistics professors. Use the table below to find the minimum sample size needed to be 95% confident that the sample standard deviations is within 20% of a. Is this sample size practical? a To be 95% confident that s is within of the value of a, the sample size n should be at least To be 99% confident that s is within 1% 5% of the value of a, the sample size 33,218 1,336 336 in should be at least The minimum sample size needed is 1% 5% 10% 20% 30% 40% 50% 21 12 10% 20% 30% 40% 85 38 22 19,205 768 192 48 8 50% 14 II