9.4.8. A utility infielder for a Nation al League club batted .260 last season in 300 trips to the plate. This year he hi t .250 in 200 at-bats. The owners are trying to cut his pay for next year on the grounds that his output has deteriorated. The player argues, though, that his perfonnances the last two seasons have not been significantly different, so his salary should not be reduced. Who is right?
9.4.9. Cnmpute -2 Ln :>., (see Equation 9.4.1) for the nightmare data of Case Study 9.4.2, and use it to test the hypothesis that px = py .Let a = 0.01.
= (0.31 - 1.%../o.0103.
= (0.11, 0.51)
Since PW PW Jo = 0 is not included in the interval (which lies entirely to the right of it should be concluded that cartx>lic acid does an effect-a beneficial one---on a surgery patient's survival rate.
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