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Unformatted text preview: zvalue given by 10001005 20 / 50 =1 . 7677. Therefore the P value of the test is 0 . 0385555. Therefore we accept the hypothesis at any signicance level less than . 038, meaning that the real value of the height is less than 1005. Problem 4. The height and weight of a sample of 10 people from a certain population is given below (in ft and lb): Height 5.1 5.3 4.9 5.3 5.2 5.1 4.9 5.1 4.7 5.2 Weight 105 120 97 125 108 111 98 112 98 129 Find the leastsquares line for the data. Is it plausible that the weights and the heights are correlated? Solution. The least square line is y =140 . 07 + 49 . 29 x . The correlation number is given by r = 0 . 8330452 which indicates a good linear dependence. The plot with the line in it is given bellow: 1 2...
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 Spring '08
 CITRIN
 Statistics, Normal Distribution, Standard Deviation, Electromagnet, Statistical hypothesis testing, percent confidence interval

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