In a study of Reyes syndrome, 160 children had a mean age of 8.5 years, a standard
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In a study of Reye’s syndrome, 160 children had a mean age of 8.5 years, a standard deviation of 3.96 years, and ages that approximated a normal distribution (based on data from Holtzhauer and others, American Journal of Diseases of Children, Vol. 140). Assume that 36 of those children are to be randomly selected for a follow-up study.
a. When considering the distribution of the mean ages for groups of 36 children, should be corrected by using the finite population correction factor? Explain.
b. Find the probability that the mean age of the follow-up sample group is greater than 10.0 years.
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