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Suppose a consumer advocacy group would like to conduct a survey to find the proportion of...

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Basic Math

Suppose a consumer advocacy group would like to conduct a surveyto find the proportion of consumers who bought the newestgeneration of an MP3 player were happy with their purchase. Theirsurvey asked consumers if they were happy or unhappy with theirpurchase. The responses indicated 28 out of 70 customers reportedbeing unhappy with their purchase. Compute a 90% confidenceinterval for the population proportion of consumers who are happywith their purchase.

(.2492, .5508)

(.4852, .7148)

(.5037, .6963)

(.3037, .4963)

Answer & Explanation Solved by verified expert
3.9 Ratings (654 Votes)
Solution Given thatn 70x 28Point estimate sample proportion x n 28    See Answer
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