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Please help me this question The owner ofa car wash service, offers three types of packages and feels demand has the following discrete probability distribution:

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The owner ofa car wash service, offers three types of packages and feels demand has the following discrete probability distribution: X P00 19 0.5 37 0.3 67 0.2 What is the value of the standard deviation for the car wash service packages .7 Please give your answerto two decimal places. Do NOT include units in your

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