In developing an interval estimate for a population mean, a sample of 50 observations was used. The interval estimate was 19.76 ± 1.32 . Had the sample size been 200 instead of 50, the interval estimate would have been:
a. 19.76 ± .33
b. 19.76 ± .66
c. 19.76 ± 5.28
d. None of these choices.
B
Business
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