5. A telephone sales solicitor, trying to decide between twoalternative sales pitches, randomly alternated between them duringa day of calls. Using approach A, 20% of 100 calls led to requestsfor the mailing of additional product information. For approach Bin another 100 calls, only 14 % led to requests for the productinformation mailing.
.At the 0.05 significance level, can we conclude that thedifference in results was due to chance?
- Construct the 95% confidence level for the difference betweenpopulation proportions (π1 - π2).
- Identify and interpret the p-value for the test.
ANSWER MUST FOLLOW THIS FORMAT:
| Define H0 : |
| Define H1 : |
| Test statistic |
| Critical value of test statistic |
| Decision rule |
| Calculated value of test statistic |
| Reject or fail to reject H0? |
| Conclusion about differences in sales pitches |
| 95% confidence interval for difference between proportions |
| Find the p-value |
| Interpret p-value |
