Q-2 a) A landscape contractor bids on jobs where he can make $3000 profit. The relative frequency of getting 1, 2, 3, 4, 5,6,7,8 or 9 jobs per month are shown. Number of jobs Frequency 1 2 3 4 5 6 7 8...

Part b

Extracted text: Q-2 a) A landscape contractor bids on jobs where he can make $3000 profit. The relative frequency of getting 1, 2, 3, 4, 5,6,7,8 or 9 jobs per month are shown. Number of jobs Frequency 1 2 3 4 5 6 7 8 9 56 78 95 98 23 65 78 90 23 Find the contractor's expected profit per month. Also find out the deviation of the landscape contractor. b) The American Automobile Association reports that the average time it takes to respond to an emergency call is 38 minutes. Assume the variable is approximately normally distributed and the standard deviation is 9.002 minutes. If 80 calls are randomly selected, approximately how many will be responded to in less than 15 minutes? How many will be responded to in 50 percent? How many will be 100 percent?