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Express the substantive question as two statistical hypotheses. Step 2 . Draw the sampling distribution assuming the the null hypothesis to be true....

  • . Express the substantive question as two statistical hypotheses.
  • Step 2. Draw the sampling distribution assuming the the null hypothesis to be true. Use p < .05 as the criterion for statistical significance to determine the critical values.
  • Step 3. Compute all necessary descriptive statistics in order to conduct a Pearson correlation. Determine the 95% CI around the correlation. Transform the Pearson correlation into a test statistic (tobs) and determine the p-value under the null hypothesis. Determine how strong the association is.
  • Step 4. Write the results in APA
  • In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The data are provided below:


Participants: are numbered 1 through 10 in order

Stress levels: Number of cups of coffee

5                                      3

3                                      2

3                                     4

9                                     6

4                                     5

2                                     1                                      

8                                    10

5                                    3

3                                    2    

8                                    4     


    

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