6. A salesperson has a 20 percent chance of making a sale to any customer who...

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6. A salesperson has a 20 percent chance of making a sale to any customer who...

6. A salesperson has a 20 percent chance of making a sale to any customer who is called. If you make 6 calls, what is the probability that a. Three (3) sales are made? b. Probability of at least 1sale in made. c. Find the mean and standard deviation.

math Statistics-And-Probability

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