Homework SourseSuppose you have used a randomized block design to measure t
Suppose you have used a randomized block design to measure the effectiveness of four drugs. The data given are the times in days to recover from the problem..
Treatments
(a) State the null and alternative hypothesis
Show your work
| Block | A | B | C | D |
| 1 | 8 | 6 | 7 | 5 |
| 2 | 10 | 9 | 12 | 10 |
| 3 | 9 | 10 | 8 | 9 |
| 4 | 12 | 11 | 10 | 10 |
| 5 | 11 | 11 | 12 | 9 |
| 6 | 8 | 8 | 9 | 9 |
| 7 | 7 | 8 | 8 | 7 |
Solution
H0: All drugs have the same recovery times
Ha: AT least two drugs have different recovery times.
Two tailed chi square test
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chi-square = 1.95
degrees of freedom = 18
probability = 1.000
As p value >0.05, accept null hypothesis.
All drugs have the same recovery times and the difference is not significant at 0.05
