A study was performed to determine the effect of introduc- ing a low-fat diet on hormone levels of 73 postmenopausal women not using exogenous hormones [15]. The data in Table 8.25 were presented for plasma estradiol in log, (picograms/milliliter). TABLE 8.25 Change in plasma estradiol after adopting a low-fat diet Estradiol log,(pg/mL 0.71 (0.26) 0.63 (0.26) Preintervention Postintervention Difference (postintervention – preintervention) -0.08 (0.20) Values are mean and sd (in parentheses) for log (base 10) of preintervention and postintervention measurements and for their difference. 8.99 What test can be performed to assess the effects of adopting a low-fat diet on mean plasma-estradiol levels? 8.100 Implement the test in Problem 8.99, and report a p-value. 8.101 Provide a 95% CI for the change in mean log,0 (plasma estradiol).

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.