Question
I want to learn statistical functions in excel and mathematical terms from the following question with good explanation. I am conducting a study on how
I want to learn statistical functions in excel and mathematical terms from the following question with good explanation.
I am conducting a study on how benzene , the active ingredient in soke,weed etc. for cancer causing. There are 4 groups in this study. After two weeks of either smoking mairjuana, ingesting THC pills, eating marijuana brownies, or taking a placebo control they are given a physics exam. The results of the exam are given below:
Smoke | Pills | Brownies | Control |
59 | 72 | 69 | 71 |
68 | 66 | 67 | 72 |
88 | 68 | 94 | 71 |
62 | 65 | 75 | 65 |
71 | 83 | 85 | 80 |
66 | 61 | 79 | 80 |
75 | 91 | 87 | 64 |
91 | 75 | 85 | 72 |
74 | 74 | 92 | 71 |
72 | 59 | 75 | 74 |
66 | 68 | 91 | 70 |
68 | 88 | 74 | 90 |
65 | 62 | 72 | 71 |
83 | 71 | 66 | 65 |
61 | 94 | 83 | 91 |
91 | 75 | 87 | 80 |
75 | 91 | 85 | 64 |
74 | 74 | 92 | 72 |
(1) What are the appropriate null and alternative hypotheses for this study?
(2) Find "ANOVA Single Factor" Select the correct data range and set alpha =0.05.What is the p-value for the ANOVA?
(3) Should I reject the null hypothesis at alpha = 0.05? What is the conclusion ?
(4) After performing the ANOVA analysis, is there any further analysis to do?if so then what it is
(5) Why is it called "Analysis of *Variance*" if we are comparing *means*?
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