Question

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A researcher is interested in the weight change of Canadian snow geese. She collects a random sample of snow geese and feeds some of them a diet of plants (labeled Plants) and some of them dog food (labeled Chow). The dataset is in the file snowgeese.xls. Of interest is whether the true average weight changes are different at the 1% significance level. Analyze the data. Report summary statistics. Justify and interpret the results. Be sure to state which procedure that you are using. Describe in context what making Type I and Type II errors would be.

Data set below

Trial	Diet	Weight Change
1	Plants	-6
2	Plants	-5
3	Plants	-4.5
4	Plants	0
5	Plants	2
6	Plants	3.5
7	Plants	-2
8	Plants	-2.5
9	Plants	-3.5
10	Plants	-2.5
11	Plants	-3
12	Plants	-8.5
13	Plants	-3.5
14	Plants	-3
15	Plants	-2.5
16	Plants	-0.5
17	Plants	0
18	Plants	1
19	Plants	2
20	Plants	6
21	Plants	2
22	Plants	2
23	Plants	2.5
24	Plants	2.5
25	Plants	0
26	Plants	0.5
27	Plants	-1
28	Plants	-3
29	Plants	-2.5
30	Plants	-2
31	Plants	0.5
32	Plants	5.5
33	Plants	7.5
34	Chow	0
35	Chow	0
36	Chow	2
37	Chow	8
38	Chow	9
39	Chow	12
40	Chow	8.5
41	Chow	10.5
42	Chow	14

Answer 1