The mean speeds of fastball pitches from two different baseball pitchers are to be compared...
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The mean speeds of fastball pitches from two different baseball pitchers are to be compared A sample of 14 pitches are measured from each and the populations have normal distributions Scouts believe that Rodriguez has a faster pitch on average Pitcher Wesley X Rodriguez X Ho Hi Hz 0 O H1 H1 H 0 Hoi Hi H2 0 H1 H1 H 0 At the 0 01 level of significance is there enough evidence that on average Rodriquez has the faster pitch a Which are the null and alternative hypotheses Hoi Hi Hy ng n O H1 H1 H 0 Hoi H Hz 0 H1 H1 H 0 Sample Mean Speed Population Standard mph 86 91 b What is the test statistic Round to 2 decimal places c What the p value Round to 4 decimal places at the d Which is the decision Reject the null hypothesis O Fail to reject the null hypothesis Deviation 3 7
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