SOLUTION: 83% of Factory workers use some sort of social media during their shifts. Find the mean, variance, and standard deviation of the number of factory workers who use social media, if

Algebra ->  Probability-and-statistics -> SOLUTION: 83% of Factory workers use some sort of social media during their shifts. Find the mean, variance, and standard deviation of the number of factory workers who use social media, if      Log On


   

Question 1174863: 83% of Factory workers use some sort of social media during their shifts. Find the mean, variance, and standard deviation of the number of factory workers who use social media, if a sample of 200 factory workers is selected
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi

Binomial distribution:  n = 200 and p = .83	
mean = np = .83(200) = 166	
variance = npq= np(1-p) = 166(.83)(.17)	= 20.667
SD = sqrt variance = √21.675  = 4.546	
Round off as directed.
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