IMPORTANT NOTE: For the following hypothesis tests make certain that you perform all the steps of a hypothesis test as shown in the course material and the text. Conclusions must refer to the actual problem question being asked. As it is the current standard for medical research journals you are required to use the p value method. If you fail to use the p-value method you will lose 50% of the marks for that question. 1. We investigated the effect of vitamin D on weight loss and traditional and non- traditional cardiovascular disease risk markers in overweight subjects. Healthy overweight subjects with mean 25(OH)D concentrations of 30 nmol/L (12 ng/mL) received vitamin D (83 ug/d) or placebo in a double-blind manner for 12 mo while participating in a weight-reduction program. The following data indicates the weight loss of a number of the subjects both in the Vitamin D group and in the placebo group. At 95% confidence is the weight loss using Vitamin D greater than the weight loss using of the placebo group? Negative indicates weight gain. Weight Reduction (kg) Vitamin D Placebo 3.2 5.8 2.2 3.2 10.4 3.1 10.7 2.7 5.2 3.1 9.9 0.9 2.8 2.1 4.1 4.3 -0.9 6.9 15.5 2.2 -0.4