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Scan 3.jpeg - 3 a 1 = 30 2 tailed Since population standard...

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Unformatted text preview: 3 a) 1 = 30 2 tailed Since population standard deviation is known, we conduct a I test at asolo confidence interval, From the = table, Ecrit : 1. 96 :. 950% confidence interval = 62 = 1. 96 ( 1.85- = 624 0. 6 6201 = tt. 35 8 +0 62 . 6 62 [ 61. 3 3 8 , 62. 162] Let Me denote the mean resting heart rates, 3b ) Ho : M 2 63 H , : M < 63 Since population standard deviation is unknown, we conduct a one-tailed t test, at 0.05 significance level. If the & value is with in the & crictical region, we do not reject Ho. If the p-value is more than 0.05, we do not reject Ho. Since the p-value = 0. 003 which is less than the significance level of 0. 05, we reject Ho and conclude that the new training methodology will result in resting heart rates of below 63 bpm for athletes....
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