Question Hell An 1Q test is designed so that the mean is 100 and the standard de

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Question Hell An 1Q test is designed so that the mean is 100 and the standard deviation is 24 for the population of normal adults. Find the sample size necessary of normal adults. Find the sample size necessary to estimate mean IQ score of statistics students such that it can be said with 95% confidence that the sample mean is within determine the required sample size using technology Then determine i this is a reasonable sample size for a real world calculation The required sample size is (Round up to the nearest integer ) 5 IQ points of the true mean. Assume that

Explanation / Answer

required sample size =89

for 95 % CI value of z= 1.9600 standard deviation = 24 margin of error E = 5 required sample size n=(z/E)2                                         = 89

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