Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean and standard deviation . Also, use the range rule of thumb to find the minimum usual value 2 and the maximum usual value +2.

n=170, p=0.75

=

nothing

(Do notround.)

=

(Round to one decimal place asneeded.)

2=

(Round to one decimal place asneeded.)

+2=

(Round to one decimal place asneeded.)