1. Compute the mean cholesterol. change in 2. Compute the standard deviation of the change in cholesterol levels. 3. Construct a stem-and-leaf plot of the cholesterol changes. 4. Compute the median change in cholesterol. 5. Is there any change in serum- cholesterol level after adopting a vegetarian hypothesis. diet? Test your

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1. The below data are a sample of cholesterol levels taken from 24 hospital employees who
were on a standard American diet and who agreed to adopt a vegetarian diet for 1 month.
Serum-cholesterol measurements were made before adopting the diet and 1 month after.
1. Compute the
cholesterol.
change
in
mean
Serum-cholesterol levels (mg/dL) before
and after adopting a vegetarian diet
TABLE 2.15
2. Compute the standard deviation of
the change in cholesterol levels.
3. Construct a stem-and-leaf plot of the
cholesterol changes.
4. Compute the median change in
cholesterol.
Subject
Before
After
Difference*
1
195
146
49
145
155
-10
3
205
178
27
4
159
146
13
5. Is there any change in serum-
cholesterol level after adopting a
vegetarian
hypothesis.
244
208
36
6
166
147
19
diet?
Test
your
7
250
202
48
236
215
21
192
184
8
10
224
208
16
11
238
206
32
12
197
169
28
13
169
182
-13
14
158
127
31
15
151
149
16
197
178
19
17
180
161
19
18
222
187
35
19
168
176
-8
20
168
145
23
21
167
154
13
22
153
8
23
178
137
41
24
137
125
12
Transcribed Image Text:2.26 4G+ 11:31 M 464% VôLTE 1 KB/S Rea... Questions 1. The below data are a sample of cholesterol levels taken from 24 hospital employees who were on a standard American diet and who agreed to adopt a vegetarian diet for 1 month. Serum-cholesterol measurements were made before adopting the diet and 1 month after. 1. Compute the cholesterol. change in mean Serum-cholesterol levels (mg/dL) before and after adopting a vegetarian diet TABLE 2.15 2. Compute the standard deviation of the change in cholesterol levels. 3. Construct a stem-and-leaf plot of the cholesterol changes. 4. Compute the median change in cholesterol. Subject Before After Difference* 1 195 146 49 145 155 -10 3 205 178 27 4 159 146 13 5. Is there any change in serum- cholesterol level after adopting a vegetarian hypothesis. 244 208 36 6 166 147 19 diet? Test your 7 250 202 48 236 215 21 192 184 8 10 224 208 16 11 238 206 32 12 197 169 28 13 169 182 -13 14 158 127 31 15 151 149 16 197 178 19 17 180 161 19 18 222 187 35 19 168 176 -8 20 168 145 23 21 167 154 13 22 153 8 23 178 137 41 24 137 125 12
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