1. An electronic store salesperson esti sets sold in a week as follows: number sold x 900 Assume that the number of sales in one week is independent of the number in any other. a) What is the probability, for a given week, that fewer than 3 flat screen smart We will be sold? b) Find the expected number of flat screen smart We sold in a week. c) Find the standard deviation of the number of at screen smart TVs sold in a week. d) The salesperson receives a weekly salary of $600, plus a commission of $60 for each at screen smart TV sold. Find the expected value of the total amount the salesperson will receive each week. e) Find the standard deviation of the total weekly amount