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 mu and standard deviation sigma. Also, use the range rule of thumb to find the minimum usual value mu minus 2 sigma and the maximum usual value mu plus 2 sigma. n=1580,=1/4
Factor − 11 - 11 out of − 11 x - 11 x . 5 x 2 − 11 ( x ) + 6 5 x 2 - 11 ( x ) + 6 Rewrite − 11 - 11 as − 5 - 5 plus − 6 - 6 5 x 2 + ( − 5 − 6 ) x + 6 5 x 2 + ( - 5 - 6 ) x + 6 Apply the distributive property. 5 x 2 − 5 x − 6 x + 6