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Homework answers / question archive / Professor wants to explore the relationship between the positive review received per day and the total number of orders received per day on Amazon
Professor wants to explore the relationship between the positive review received per day and the total number of orders received per day on Amazon. Professor randomly selected 7 amazon product links. The data is presented in the table below.
Link # | # of positive reviews received/day | # of orders received/day |
1 | 2 | 4 |
2 | 4 | 7 |
3 | 3 | 3 |
4 | 7 | 6 |
5 | 9 | 11 |
6 | 8 | 9 |
7 | 9 | 9 |
= 42, =1764, = 49, =393, = 339
Conduct a hypothesis test using the following steps. Set alpha =.05, two-tailed
Step 1: State the hypotheses in words and symbols
Step 2: Set up the criteria for making the decision, that is find the critical value
Step 3: Summarize the data into the appropriate test-statistic. That is, compute the correlation.
Step4: Evaluate the Null Hypothesis ( Reject or Fail to Reject )
Step5: State your conclusion
What proportion of the variability of the number of orders received can be explained by the variability of the number of positive reviews received?