Question 7.79

49. Harley-Davidson motorcycles make up 14% of all the motorcycles registered in the United States. You plan to interview an SRS of 500 motorcycle owners.

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  1. What is the approximate distribution of the proportion of your sample who own Harleys?
  2. In 95% of all samples like this one, the proportion of the sample who own Harleys will fall between __________ and _________. What are the missing numbers?

49.

(a) The distribution is approximately normal with mean of and a standard deviation as follows:

(b)