Compute the sample size
A standard IQ test has a mean of 98 and the standard deviation of 16. We desire to be 99% certain that we are in 8 IQ points of the true mean. Compute the sample size?
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A private medical clinic desires to determine the true annual income of its patients. The clinic needs to be in $200 of the true mean. The clinic determines that the true population deviation is around $1,300.
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