SOLUTION: 23% of adults did not visit their physicians’ offices last year. Let x be the number of adults in a random sample of 58 adults who did not visit their physicians’ offices last year

Algebra ->  Probability-and-statistics -> SOLUTION: 23% of adults did not visit their physicians’ offices last year. Let x be the number of adults in a random sample of 58 adults who did not visit their physicians’ offices last year      Log On


   



Question 1070655: 23% of adults did not visit their physicians’ offices last year. Let x be the number of adults in a random sample of 58 adults who did not visit their physicians’ offices last year. What are the mean and standard deviation of the probability distribution of x?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The mean is np=58*0.23=13.34
the variance is np(1-p)=13.34*0.77=10.27
the sd is the sqrt (variance)=3.20.
(mu=13.34, sigma=3.20)