Answer Happy

PLEASE SHOW WORK ON EXCEL WITH FORMULAS. Doing it on paper is
not going to help me!!
The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes with the following results a. find the expected number of arrivals per minute b. find the standard deviation. Arrivals Frequency Probability f(x) **f(x) X-E[X] (x-E[x])? (x-E[x])2*f(x) 0 14 1 31 2 47 3 41 4 29 5 21 6 10 7 5 8 2 Variance Var[x] Total 200 E[X]