A researcher wishes to see if there is a difference in the manual dexterity of athletes and that of band members. Two random samples of 28 are selected from each group and are given a manual dexterity test. The mean of the athletes' test was 89, and the mean of the band members' test was 95. The population standard deviation for the test is 7.4. Use u, for the mean of the athletes' test. At a=0.05, is there a difference in the mean scores? Use the P-value method and tables. Part: 0 / 5 O E m

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