Question: Refer to the Chance (Fall 1998) study of point-spread errors in NFL games, Exercise 7.41. Recall that the difference between the actual game outcome and

Refer to the Chance (Fall 1998) study of point-spread errors in NFL games, Exercise 7.41. Recall that the difference between the actual game outcome and the point spread established by odds makers-the point-spread error-was calculated for 240 NFL games. The results are summarized as follows: x̅ = -1.6, s = 13.3. Suppose the researcher wants to know whether the true standard deviation of the point-spread errors exceeds 15. Conduct the analysis using α = .10.

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