In a test of the quality of two television commercials, eachcommercial was shown in a separate test area six times over aone-week period. The following week a telephone survey wasconducted to identify individuals who had seen the commercials.Those individuals were asked to state the primary message in thecommercials. The following results were recorded.
Commercial A Commercial B
Number who saw the commercial: 155 Number who saw thecommercial: 204
Number who recalled the message: 64 Number who recalled themessage: 63
Use a=.05 and test the hypothesis that there is no difference inthe recall proportions for the two commercials.
Formulate the null and the alternative hypotheses.
What is the value of the test statistic?
What is the p-value( round to 4 decimals)
Compute a 95% confidence interval for the difference between therecall proportions for the two populations (to 4 decimals).
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