Question 4 Based on the data collected by the National Centre for health Statistics and made available to the public in the Sample Adult database, it was found that the percentage of adults who have at some point in their life been told that they have hypertension was 15%. Suppose that a random sample of 12 adults is taken: 1. What is the probability that exactly three have been told that they have hypertension? 2. What is the probability that more than three have been told that they have hypertension? 3. What is the probability that more than 10 have not been told that they have hypertension? 4. Calcuate E(X) 5. Calculate Var(X)
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Based on data collected by the National Centre for Statistics, an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 24 percent. If we select a random sample of 10 adults, find the probability that the number of people in the sample who have been told that they have hypertension will be: a. Exactly seven b. Fewer than three c. Three or more d. Between three and seven, exclusive e. How many of adults would you expect to have hypertension? f. Find the standard deviation and variance of the number of people in the sample who have been told that they have hypertension
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Based on data collected by the National Center for Health Statistics and made available to the public, the estimate of the percentage of adults who also have hypertension at some point in their life is 5%. If we select a simple random sample of 20 US adults and assume that the probability that each has been told that he or she has hypertension is 0.20, find the probability that the number of people in the sample who have been told that they have hypertension will be: - exactly three - at least three - at most five - between six and ten, inclusive Using the actual percentage of 23.53, what is the mean and standard deviation?
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