99% = mean ± 2.575 SEm
SEm = SD/√n
"mean for this group" = sample mean
It is known that the population mean for the Full Scale IQ of the WAIS is 100 with a standard deviation of 15. A researcher assesses a sample of 200 adults and find that they have a mean Full Scale IQ of 102. The point estimate of the mean for this group is ___________ and the 99% confidence interval for this group is ____________________.
a. 100; (97.27; 102.73)
b. 102; (97.27, 102.73)
c. 100; (99.27; 104.73)
d. 102; (99.27, 104.73)
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