SOLUTION: Of 116 randomly selected adults, 34 were found to have high blood pressure. Find a 98% confidence interval for the percentage of adults that have high blood pressure.
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-> SOLUTION: Of 116 randomly selected adults, 34 were found to have high blood pressure. Find a 98% confidence interval for the percentage of adults that have high blood pressure.
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Question 932605: Of 116 randomly selected adults, 34 were found to have high blood pressure. Find a 98% confidence interval for the percentage of adults that have high blood pressure. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! p(HBP) = 34/116 = .2931
ME = 2.326sqrt((.2931)(.7069)/116) = .0423
CI: = .2931 ± .0447
(25.08%, 33.54%)
round as directed
.....
CI z = value
90% z =1.645
92% z = 1.751
95% z = 1.96
98% z = 2.326
99% z = 2.576
