Question: The pulse rates below were recorded over a thirty second time period, both before and after a physical fitness regimen. The data is shown below for 8 randomly selected participants. Is there sufficient evidence to conclude that a significant amount of improvement took place? Suppose pulse rates are normally distributed. Test using α = 0.05.
|
Before
|
31
|
25
|
30
|
31
|
33
|
25
|
32
|
45
|
|
After
|
32
|
29
|
30
|
37
|
40
|
35
|
34
|
52
|