A scientist claims that pneumonia causes weight loss in mice. The table shows the weights (in grams) of six mice before infection and two days after infection. At a = 0.05, is there enough evidence to support the scientist's claim? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (e) below. Mouse 1 2 3 4 5 6 3 Weight (before) 22.9 19.7 21.8 23.1 20.5 20.6 Weight (after) 22.8 19.7 21.7 23.2 20.5 20.5 OD (a) Identify the claim and state Ho and Ha- What is the claim? O A. Weight gain causes pneumonia in mice. O B. Weight loss causes pneumonia in mice. O C. Pneumonia causes weight loss in mice. O D. Pneumonia causes weight gain in mice. Let Ha be the hypothesized mean of the difference in the weights (before - after). What are Ho and Ha? OA. Ho: Hd = 0 OB. Ho: Ha #0 OC. Ho: Ha So Ha: Hd # 0 Ha: Hd = 0 Ha: Hd > 0 OD. Ho: Ha 2 d OE. HO: Hd 20 OF. Ho: Hasa Ha: Ha d (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in any answer boxes to complete your choice. (Round to three decimal places as needed.) O A. t O B. t> O c. t