You wish to compare how a low-fat diet, low-fat diet and a brisk four-mile walk each day, and a low-fat diet and a four-mile job each day affect cholesterol levels. You randomly assign six subjects to each group. The scores in the table below show the reduction in cholesterol count after two months.

Conduct all 5 steps of the appropriate statistic. Be sure to label all five steps.

Report the statistics as you would in a journal article.

Low-Fat Diet		Diet and Walk		Diet and Run
10		14		19
8		12		15
15		18		14
12		16		16
9		13		18
6		17		20

Make Assumptions and meet test requirements.

State the null hypothesis.

Select the sampling distribution and establish the critical region.

Compute the test statistic.

Sample		X		X2
Low-fat diet		10		100
Mlfd = 10		8		64
nlfd = 6		15		225
		12		144
		9		81
		6		36
		?Xlfd = 60		?X2 = 650
Diet + Walk		14		196
Mdietwalk = 15		12		144
ndietwalk = 6		18		324
		16		256
		13		169
		17		289
		?Xdietwalk = 90		?X2 = 1378
Diet + Run		19		361
Mdietrun = 17		15		225
ndietrun = 6		14		196
		16		256
		18		324
		20		400
		?Xdietrun = 102		?X2 = 1762

Summary Data Table
	Low-fat	Diet+Walk	Diet+Run
?X	60	90	102
?X2	650	1378	1762
Group Mean	10	15	17
Grand Mean	14

Source Table
Source	SS	df	MS	F
Between-Groups	?	?	?	?
Within-Groups	?	15	?
Total	?	17

SST = ?X²