Unformatted text preview: pvalue = 0.051. f. t = (Mean − null value)/(SE Mean) = (193.13 − 200)/4.07 = − 1.688 rounded to − 1.69. g. Because the pvalue is .051 > .05, do not reject the null hypothesis. There is not sufficient evidence to conclude that the mean cholesterol level for the population of people like the control patients is less than 200. Note: Some researchers would round off the pvalue to two digits, and report it as .05. As a reader, you must use your own judgment about whether .051 is small enough to reject the null hypothesis. 13.15 a. Null standard error is 121 . 2 50 15 ) ( s.e. = = = n s x b. 943 . 121 . 2 100 102 error standard Null value Nullstatistic Sample = − = c. No, to find the proper pvalue we must know whether the alternative hypothesis is onesided or twosided....
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 '08
 BARROSO,JOAOR
 Statistics, Null hypothesis, Statistical hypothesis testing, mean cholesterol level, Null standard error

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