The Harvard school of public health conducted a survey of 2770 adults in the United States to determine the proportion of Americans who own guns. According to the results, injury prevention in 2007 reported that 26 percent of adults own at least one gun. State and estimate the population parameter using point estimate and a 99 percent confidence interval estimate.

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Asked Dec 10, 2019
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The Harvard school of public health conducted a survey of 2770 adults in the United States to determine the proportion of Americans who own guns. According to the results, injury prevention in 2007 reported that 26 percent of adults own at least one gun. State and estimate the population parameter using point estimate and a 99 percent confidence interval estimate. 

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Expert Answer

Step 1

It is given that sample size n is 2,770 and p hat is 0.26.

The point estimate for population parameter is 0.26.

Step 2

The 99% confidence interval for p i...

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P(1-p) CI = p±=« п 0.26×(1-0.26) = 0.26±=0.01- 2,770 = 0.26+ 2.58(0.0083) (: Using standard normal table) ~(0.2386,0.2814)

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