A sample of 13 children has a mean IQ of 112 and a standard deviation of 15. Is it likely that this could be a random sample from a population whose mean is known to be 113.5?
A. Yes, it is likely that a random sample mean could deviate that much from a population mean.
B. The question cannot be answered on the basis of the information given.
C. No, a random sample mean could not deviate that much from a population mean.
D. No, the calculations are incorrect.
Answer: A
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