: (4 points) Read over the following abstract and answer the questions at the end. OBJECTIVE The aim of this study was to examine the effect of a moderate-fat diet inclusive ~ of walnuts on blood lipid proles 1n patients with type 2 diabetes. i RESEARCH DESIGN AND METHODS This was a parallel randomized controlled trial I comparing three dietary advice groups each with 30% energy as fat: low fat, modied low fat, and modied low fat inclusive of 30 g of walnuts per day. Fifty-eight men and women, mean f age 5918.1 years, started the trial. Dietary advice was given at baseline with monthly follow-up 5. and fortnightly phone calls for support. Body weight, percent body fat, blood lipids, HbAlc, . total antioxidant capacity, and erythrocyte fatty acid levels were measured at 0, 3, and 6 months. Data were assessed by repeated-measures AN OVA with an intention-totreat model. total cholesterol ratio (P = 0.049) and HDL (P = 0.046) than the two other treatment groups. A 10% reduction in LDL cholesterol was also achieved in the walnut group, reecting a signicant effect by group (P: 0.032) and time (P= 0.036). There were no signicant differences between 1 groups for changes 1n body weight, percent body fat, total antioxidant capacity, or HbAlc ' levels. The higher dietary polyunsaturated fat-to-saturated fat ratio and intakes of (11-3 fatty acids ' in the walnut group were conrmed by erythrocyte biomarkers of dietary intake. 1 l l 5 ! RESULTS The walnut group achieved a signicantly greater increase in I-IDL cholesterol-to- t I . CONCLUSIONS Structured "whole of diet" advice that included 30 g of walnuts/day lidelivering substantial amounts of polyunsaturated fatty acid improved the lipid prole of patients with type 2 diabetes. a. List all conclusions that seem to involve some form of hypothesis test. You may not necessarily know what the actual type of test was that was performed in each case. Note ' that these authors report their conclusions in more than one form. Are there any conclusions that you feel is weakly supported by the statistics? Explain ' 5 ' y or why not. Pick one hypothesis test and say what type of test you think it was. Give the null thesis for this example. . g