we investigated adult heterosexuals having multiple partners, that is, p in this situation. Recall that the national AIDS behavioral surveys found that 170 of 2,673 adult heterosexuals had multiple partners. We regarded this as a random sample so it's representation of the larger population of adult heterosexuals. then we calculate a 99% confidence interval for p, which was (.051539, .0757581), or about 5% to 8%. Now there's a claim that "p is 20%".

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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we investigated adult heterosexuals having multiple partners, that is, p in this situation. Recall that the national AIDS behavioral surveys found that 170 of 2,673 adult heterosexuals had multiple partners. We regarded this as a random sample so it's representation of the larger population of adult heterosexuals. then we calculate a 99% confidence interval for p, which was (.051539, .0757581), or about 5% to 8%. Now there's a claim that "p is 20%". 

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