Suppose that for a given computer salesperson, the probability distribution of x = the number of systems sold in 1 month is given by the following table. X p(x) 1 2 0.06 0.10 3 4 5 6 7 (a) Find the mean value of x (the mean number of systems sold). 8 0.11 0.30 0.30 0.11 0.01 0.01 (b) Find the variance and standard deviation of x. (Round your standard deviation to four decimal places.) variance standard deviation How would you interpret these values? (Round your standard deviation to four decimal places.) The mean squared deviation from the mean number of systems sold in one month is from the mean number of systems sold in one month is . A typical deviation (c) What is the probability that the number of systems sold is within 1 standard deviation of its mean value?

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