4.4 Mean, Variance, and Standard Deviation for the Binomial Distribution

In Section 4.2, we used the general formulas for Random Variable Distributions

     Both sets of formula appear pg 210

But the special qualities of Binomials lead to specialized rules for Binomials

 
                     

                     

                     
 

#6 Mult-choice  50 questions, a,b,c,d   find  mean and std dev.
 
 
 
 

#10 a)  n=200, p=.10,  find  mean and standard devaition
 
 
 
 
 

        b)  Using mean and standard deviation, see if 14 is unusual
 
 
 

#12 a)  find mean and standard deviation,  for n = 850,  p = .032
 
 
 
 

        b)  Is 7 unusual?