In 1975, a random sample of 1484 adult U.S. citizens was surveyed, and 193 strongly agreed with the statement, People should take care of themselves. Then, in 1991, a survey of 1013 adult U.S. citizens showed that only 61 strongly agreed with the statement. Does this indicate that the proportion of U.S.adults who strongly agree with the given statement has dropped?

TESTS OF SIGNIFICANCE

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In 1975, a random sample of 1484 adult U.S. citizens was surveyed, and 193 strongly agreed with the statement, “People should take care of themselves". Then, in 1991, a survey of 1013 adult U.S. citizens showed that only 61 strongly agreed with the statement. Does this indicate that the proportion of U.S.adults who strongly agree with the given statement has dropped?

A	Two-Sample Z Test for the Difference in Proportions
B	Two-Sample T Test for the Difference in Means
C	Matched Pairs T Test for a Mean
D	One-Sample T Test for a Mean

Explanation:

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RESEARCH METHODOLOGY

STATISTICAL TECHNIQUES AND TOOLS

TESTS OF SIGNIFICANCE