Question

According to the Centers for Disease Control, 33.5 % of American adults ages 20 and over suffer from hypertension. A sample of 131 adults were recruited to participate in relaxation training in hopes of lowering the incidence of hypertension. At the end of a year, the adults are re-evaluated and the proportion who suffer from hypertension is recorded.

1. Completely describe the sampling distribution of the sample proportion of adults who suffer from hypertension when samples of size 131 are selected. Round any calculated values to four decimal places.
   • mean: μˆpμp^ =
   • standard deviation: σˆpσp^  =  (round to 4 decimal places)
   • np = and n(1 - p) =  so the distribution of ˆpp^ is: Select an answer Not normally distributed Normally distributed  
2. According to the Empirical Rule, we expect 95 % of all samples of 131 adults to result in a sample proportion between ___ and ___ with hypertension. Round your answers to 4 decimal places. (Hint: Draw the normal model based on the description in part a.)

Answer 1

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