Question: Steele Electronics. Inc. sells expensive brands of stereo equipment in several shopping malls throughout the northwest section of the United States. The Marketing Research Department of Steele reports that 30 percent of the customers entering the store that indicate they are browsing will, in the end, make a purchase. Let the last 20 customers who enter the store be a sample.

1. How many of these customers would you expect to make a purchase?
2. What is the probability that exactly five of these customers make a purchase?
3. What is the probability ten or more make a purchase?
4. Does it seem likely at least one will make a purchase?

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