diet and exercise on blood cholesterol levels. The total cholesterol was measured in each subject initially and then three months after participating in an aerobic exercise program and switching to a low-fat diet. The data are shown in the following table: Blood Cholesterol Level Subject Before After 265 229 240 231 258 227 295 240 251 238 245 241 287 234 314 256 260 247 279 239 283 246 12345 3 5 6 7 8 9 10 11

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Fifteen adult males between the ages of 35 and 50 participated in a study to evaluate the effect of
diet and exercise on blood cholesterol levels. The total cholesterol was measured in each subject
initially and then three months after participating in an aerobic exercise program and switching to
a low-fat diet. The data are shown in the following table:
Blood Cholesterol Level
Subject
Before
After
1
265
229
2
240
231
3
258
227
4
295
240
5
251
238
6
245
241
7
287
234
8
314
256
9
260
247
10
279
239
11
283
246
12
240
218
13
238
219
14
225
226
15
247
233
Do the data support the claim that low-fat diet and aerobic exercise are of value in producing a
mean reduction in blood cholesterol levels? Use a = 0.05
a. None among the choices
b. Fail to reject the Null Hypothesis. 5.465 > 1.753
O c. Reject the Null Hypothesis. 5.465 > 1.753
O d. Reject the Null Hypothesis. 5.465 > 1.761
Transcribed Image Text:Fifteen adult males between the ages of 35 and 50 participated in a study to evaluate the effect of diet and exercise on blood cholesterol levels. The total cholesterol was measured in each subject initially and then three months after participating in an aerobic exercise program and switching to a low-fat diet. The data are shown in the following table: Blood Cholesterol Level Subject Before After 1 265 229 2 240 231 3 258 227 4 295 240 5 251 238 6 245 241 7 287 234 8 314 256 9 260 247 10 279 239 11 283 246 12 240 218 13 238 219 14 225 226 15 247 233 Do the data support the claim that low-fat diet and aerobic exercise are of value in producing a mean reduction in blood cholesterol levels? Use a = 0.05 a. None among the choices b. Fail to reject the Null Hypothesis. 5.465 > 1.753 O c. Reject the Null Hypothesis. 5.465 > 1.753 O d. Reject the Null Hypothesis. 5.465 > 1.761
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