Null Hypothesis Sample Assignment
1. State the null hypothesis for treatments:
2. State the null hypothesis for blocks:
3. State the alt. hypothesis for treatments:
4. State the alt. hypothesis for blocks:
5. test at the alpha of 0.05
6. Choose the correct test:
Blocking ANOVA
- Find the critical value: 2.49
- Copy your ANOVA table from the "blockdesigncalcs" worksheet:
|
ANOVA Table | |||||
|
Source |
df |
SS |
MS |
Fcalc |
p-value |
|
Treatments |
2 |
6534.13 |
3267.07 |
6.2558 |
0.005 |
|
Blocks |
9 |
7402.03 |
822.45 |
1.5748 |
0.196861213 |
|
Error |
18 |
9400.38 |
522.24 | ||
|
Total |
29 |
23336.53 | |||
7. Create a graph showing what the data actually look like and include a line for the null hypothesis. (you can refer to the graphs shown in lecture as a reference, this can be a bar graph with a line)
8. Write a short paragraph explaining your results (to my mother-in-law if you wish). Be sure to include in your explanation what type of hypothesis test you conducted and why as well as whether you are able to reject your null hypotheses AND what does that mean. (This should be no longer than a half page)
We performed a block ANOVA for the various soil types and seed types. The results from this test showed that block f calc is smaller than f crit. Due to this, we fail to reject the null hypothesis. Therefore we support the claim that there is no difference between the three seed types. In addition, the test showed that the f crit is greater than the f calc for the treatment which means we also fail to reject the null hypothesis for the treatment. This indicates that there is no difference in the soil type for the seeds.
