Question

To design a new advertising campaign, Volkswagen would like to estimate the proportion of drivers of the new VW Beetle who are women. In a random sample of 250 Beetle owners, 140 of them were women.
a. Construct a 95% confidence interval to estimate this proportion.
b. What is the margin of error for this sample?
c. Verify your results using PHStat.


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  • CreatedJuly 17, 2015
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