A national survey reported that 31% of adults in a certain country have hypertension (high blood pressure). A sample of 21 adults is studied. Round the answer to at least four decimal places. What is the probability that more than 8 have hypertension?
A national survey reported that 31% of adults in a certain country have hypertension (high blood pressure). A sample of 21 adults is studied. Round the answer to at least four decimal places. What is the probability that more than 8 have hypertension?
Chapter8: Sequences, Series,and Probability
Section: Chapter Questions
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A national survey reported that 31% of adults in a certain country have hypertension (high blood pressure). A sample of 21 adults is studied. Round the answer to at least four decimal places. What is the
Expert Solution
Step 1
Let X denote the no.of adults in a certain country have hypertension and it follows binomial distribution with parameters
The probability mass function of X is,
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