Peak expiratory flow PEF is a measure of a patient’s ability to expel air Solution
Group |
Number of Children |
Mean PEF |
Std Dev PEF |
Chronic Bronchitis |
25 |
281 |
68 |
No Chronic Bronchitis |
25 |
319 |
74 |
Exercise Group |
N |
Mean |
Std Dev |
Weight Training |
20 |
49.7 |
10.2 |
Aerobic Exercise |
20 |
43.1 |
11.1 |
Stretching/Yoga |
20 |
57.0 |
12.5 |
Is there a significant difference in mean HDL levels among the exercise groups? Run the test at a
5% level of significance. HINT: SSerror = 7286.5.
Peak expiratory flow (PEF) is a measure of a patient’s ability to expel air Solution
Now this is a test for one sample mean. We can see that the test is one tailed (as seen from the alternative hypothesis). Here as the population standard deviation is unknown so we can use the t-test for single ...
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