Answer Happy

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 30% of a. Is this sample size practical? To be 95% confident that s is within of the value of a, the sample size In should be at least To be 99% confident that s is within of the value of o, the sample size n should be at least. The minimum sample size needed is Is this sample size practical? 1% 5% 10% 20% 30% 40% 50% 19,205 768 192 48 21 12 8 5% 10% 20% 30% 40% 50% 38 22 14 1% 33,218 1,336 336 85 O A. Yes, because the sample size is small enough to be practical for most applications. OB. No, because the sample size should be as small as possible for most applications. O C. No, because the sample size is excessively large to be practical for most applications. O D. Yes, because the sample size should be as large as possible for most applications.