The National AIDS Behavioral Surveys interviewed a sample of

The National AIDS Behavioral Surveys interviewed a sample of adults in the cities where AIDS is most common. This sample included 791 heterosexuals who reported having more than one sexual partner in the past year. We can consider this an SRS of size 791 from the population of all heterosexuals in high-risk cities who have multiple partners. These people risk infection with the AIDS virus. Yet 310 of the respondents said they never use condoms. Is this strong evidence that more than one-third of this population never use condoms? (Use = 0.05.)

P-value? Which of the below is correct?

P > 0.1000

.050 < P < 0.100    

0.025 < P < 0.0500

.010 < P < 0.0250

.001 < P < 0.010

P < 0.001

Conclusion. Which is correct?

There is evidence that more than one-third of this group never use condoms.

There is no evidence that more than one-third of this group never use condoms.   

Solution