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

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Statistics

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.

n1100n2100
p 120%p 214%

Answer & Explanation Solved by verified expert
3.9 Ratings (468 Votes)
The hypotheses areH0 H1 Sample proportions arep1 02 and p2 014Pooled sample proportion p n1 p1 n2 p2 n1 n2 100 02 100 014 100 100 017Standard error    See Answer
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