Question 28 (3 points Use the given degree of confidence and sample data to cons

Question

Question 28 (3 points Use the given degree of confidence and sample data to construct a confidcnce interval for the population proportion when 355 college students are randomly seleted and surveyed it is found that 12 own a car. Construct a 96% confidence interval for the percentage of all college students who own a car. Use three decimal places for final answers. Rounding in between may cause your final answer to be wrong. The margin of ecror for this confidence interval is: (3 DECIMAL PLACES) The LOWEST number in the confidence Interval is , and lhe highesEvalue of the confidence interval's (3 DECIMAL PLACES)

Explanation / Answer

Ans:

sample proportion=129/355=0.363

z value for 96% CI is 2.054

96% CI for p

=0.363+/-2.054*sqrt(0.363*(1-0.363)/355)

=0.363+/-0.052

=(0.311,0.416)

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