5. A telephone sales solicitor, trying to decide between two alternative sales pitches, randomly alternated between...

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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 (Ï€1 - Ï€2).
- 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

Answer & Explanation Solved by verified expert

4.2 Ratings (549 Votes)

Define H0 Define H1 Test statistic For difference in proportionswe will calculate z test statistic to conduct twoproportionztestCritical value of test statistic 196 fortwotail tests and 005 significance levelDecision rule Reject H0 is the test statisticis less than See Answer

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