21. A new medicine is designed to reduce blood pressure, and is being tested in two doses (100 mg and 50 mg). A placebo group is also formed to compare against the two experimental groups. The reduction in blood pressure among patients in each group is as follows: 100 mg 15 11 -2 23 11 21 17 18 -5 50 mg -4 9. 7 -11 13 -5 24 31 20 -4 Placebo 3 9 -2 17 21 27 -8 14 -2 Can we say that there is a significant result in these findings? (a = .10)

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Please solve algebraically

21. A new medicine is designed to reduce blood pressure, and is being tested in two doses
(100 mg and 50 mg). A placebo group is also formed to compare against the two
experimental groups. The reduction in blood pressure among patients in each group is
as follows:
100 mg
8
15
11
-2
23
11
17
18
-5
50 mg
-4
7
-11
13
-5
31
-4
Placebo
3 9
-2
17
21
27
-8
14
-2
Can we say that there is a significant result in these findings? (a = .10)
22. Ten students in a jazz history class were given a pre-test and a post-test to see how much
they learned in the class.
Pre-test
8
13
22
25
29
31
35
38
42
52
Post-test
31
37
45
28
50
37
49
25
36
69
Can we say that the post-test scores are significantly higher than the pre-test scores?
20
21
24
Transcribed Image Text:21. A new medicine is designed to reduce blood pressure, and is being tested in two doses (100 mg and 50 mg). A placebo group is also formed to compare against the two experimental groups. The reduction in blood pressure among patients in each group is as follows: 100 mg 8 15 11 -2 23 11 17 18 -5 50 mg -4 7 -11 13 -5 31 -4 Placebo 3 9 -2 17 21 27 -8 14 -2 Can we say that there is a significant result in these findings? (a = .10) 22. Ten students in a jazz history class were given a pre-test and a post-test to see how much they learned in the class. Pre-test 8 13 22 25 29 31 35 38 42 52 Post-test 31 37 45 28 50 37 49 25 36 69 Can we say that the post-test scores are significantly higher than the pre-test scores? 20 21 24
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