The BMI comparison problem doesn't provide a place to submit the answer! (Also,it appears as if the both the diet and placebo INCREASE bmi, but that is another problem.

Author: rthisted

06_StatisticalInference/homework/hw3.Rmd

@@ -155,7 +155,7 @@ The interval was conducted subtracting 4 - 6 and was entirely above zero.
 --- &multitext
 Suppose that 18 obese subjects were randomized, 9 each, to a new diet pill and a placebo. Subjects' body mass indices (BMIs) were measured at a baseline and again after having received the treatment or placebo for four weeks. The average difference from follow-up to the baseline (followup - baseline) was 3 kg/m2 for the treated group and 1 kg/m2 for the placebo group. The corresponding standard deviations of the differences was 1.5 kg/m2 for the treatment group and 1.8 kg/m2 for the placebo group. The study aims to answer whether the change in BMI over the four week period appear to differ between the treated and placebo groups. 
 
-What is the pooled variance estimate? (to 2 decimal places)
+1. What is the pooled variance estimate? (to 2 decimal places)
 
 
 *** .hint