21 Sep Before computing the correlation, state the null hypothesis and alternative hypothesis in words (not f
Participant Sleep Time Reaction Time
1 7 0.08
2 8.5 0.08
3 8 0.09
4 7 0.17
5 6.5 0.09
6 5 0.09
7 7.25 0.09
8 7 0.08
9 8.5 0.06
10 8 0.06
11 6.5 0.2
12 7 0.15
13 5 0.089
14 7.25 0.1
15 8.5 0.07
16 7 0.09
17 6.5 0.09
18 5 0.07
19 7.25 0.17
20 7 0.1
- Before computing the correlation, state the null hypothesis and alternative hypothesis in words (not formulas).
- Based on the hypotheses you stated, explain whether the researcher should conduct a one-tailed or two-tailed test.
- Identify the correlation coefficient (r) for this data set using SPSS and report it in your answer document.
- State the degrees of freedom and explain how you calculated it by hand.
- Identify the p value and report it in your answer document.
- Explain whether the researcher should retain or reject the null hypothesis.
- Are the results statistically significant? Explain how you know.
- Explain what the researcher can conclude about the relationship between amount of sleep and reaction times. Include a description of the direction (positive, negative, or no relationship) and strength (weak, moderate, or strong) of the relationship.
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