[問題] 一題統計(假說檢定)問題請高手幫忙
4. Refer to the Chance (Fall 1998) study of point-spread errors in NFL games.
Recall that the difference between the actual game outcome and the point
spread established by oddsmakers–the point-spread error–was calculated for
101 NFL games. The results are summarized as follows: = –1.6, s = 16.3.
Suppose the researcher wants to know whether the true standard deviation of
the point-spread errors exceeds 15. Conduct the analysis using α = 0.10.
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