Question

Question 34 0/2 pts Question 8b 8. According to the National Center for Health Statistics, 13.7% of adults are smokers. A random sample of 300 adults is obtained. b. We want to describe the sampling distribution of the sample proportion of adults who smoke. For this question, what is the standard deviation of this sampling distribution? 0.01985 0.137 0.7614 7.218 41.1

Answer 1

Solution

Given that,

p = 0.137

1 - p = 1-0.137=0.863

n = 300

standard deviation=$\sigma$$\hat p$ =  $\sqrt$[p ( 1 - p ) / n] =  $\sqrt$ [(0.137*0.863) /300 ] = 0.01985