A salesperson has found that the probability of making various numbers of sales per day. given that calls on 10 sales prospects can be made, is presented in the table below. Calculate the average number of sales per day, variance and the standard deviation of the number of sales. Use the table below to compute for the following. Sales per day when 10 prospects are contacted ... Number of Sales, X 2 3 6 7 1 4 8 Probability, P(X) 0.04 0.15 0.20 0.25 0.19 0.10 0.05 0.02 Prompts Average number of sales per day Variance of the number of sales Standard deviation of the number of sales

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