Question

Guns make a unique marking on the bullets they fire and their shell casings. These markings are called ballistic fingerprints. An ABCNEWS Poll examined the opinions of Americans on the enactment of a law "... that would require every gun sold in the United States to be test-fired first, so law enforcement would have its fingerprints in case it were ever used in a crime." Independent simple random samples were taken of 537 women and 495 men. When asked if they would support a ballisting fingerprinting law, 446 of the women said "yes" while 307 of the men said "yes." Give a 99% confidence interval for the difference in the proportion of women and the proportion of men supporting the law.
NOTE: Use Women minus Men in your proportion calculations and base your confidence interval on a pooled estimate of p.

Based on the 99% confidence interval for the difference in proportions, which of the following statements are true?

		The proportion women answering 'yes' is not significantly different from the proportion of men answering 'yes'.
		The proportion women answering 'yes' is significantly smaller than the proportion of men answering 'yes'.
		The proportion women answering 'yes' is significantly larger than the proportion of men answering 'yes'.
		You can't compare the men and women.

Answer 1

The proportion women answering 'yes' is not significantly different from the proportion of men answering 'yes'.