Question 1 {0 decimal places } Find the value of the sample mean.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Question 1 {0 decimal places }
Find the value of the sample mean.
Transcribed Image Text:Hypertension is a long-term medical condition in which the blood pressure in the arteries is persistently
elevated. In elderly patients with hypertension, a high systolic pressure can cause a fainting episode, so
X
transporting them to an emergency clinic is imperative. Let be the systolic blood pressure of elderly
patients with hypertension on arrival at the emergency clinic after a fainting episode. A random sample of
such patients was considered. The measurements of each patient, in mm Hg, are given below. At the 5%
level of significance, can we conclude from the data in this sample that the mean systolic blood pressure of
all elderly hypertensive patients transported to an emergency clinic after a fainting episode is smaller than
175 mm Hg?
patient
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
X
166
178
153
157
178
158
153
169
182
155
151
195
202
169
157
patient
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
X
173
161
155
154
178
200
168
196
180
191
167
170
161
191
166
patient
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
X
167
163
157
201
204
159
154
192
162
182
165
190
154
150
194
patient
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
x
182
196
169
158
180
199
182
178
161
170
168
158
159
169
163
1
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