Mathematics, 13.08.2020 21:01 mixedkiddo
An IQ test is designed so that the mean is 100 and the standard deviation is for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with % confidence that the sample mean is within IQ points of the true mean. Assume that and determine the required sample size.
Answers: 1
from the normal distribution table the value is 
![n = [ \frac{ Z_{\frac{\alpha }{2} } * \sigma }{E }]^2](/tpl/images/0721/6935/42146.png)
![n = [ \frac{ 1.96 * 24 }{3 }]^2](/tpl/images/0721/6935/296f4.png)
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An IQ test is designed so that the mean is 100 and the standard deviation is for the population of n...
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