Question

In: Statistics and Probability

According to statistics reported on news source, a surprising number of motor vehicles are not covered by Insurance


According to statistics reported on news source, a surprising number of motor vehicles are not covered by Insurance. Sample results, consistent with the news report, showed 64 of 400 vehicles were not covered by Insurance 


(a) What is the point estimate of the proportion of vehicles not covered by Insurance? 

(b) Develop a 95% confidence interval for the population proportion

Solutions

Expert Solution

n = 400

x = 64

A)

At 95% confidence level the z is ,

=1-95%

Margin of error

E=0.0359

B)

A 95% confidence interval for population proportion p is ,

0.1241 to 0.1959

orchestra answered 2 years ago
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