Unformatted text preview: 9.20 a. The proportion of the class that has a midterm mark of lower than 75 is 30.85%. b. The probability a class of 50 has an average midterm mark of 75 is .02%. 9.23 a. The probability the total number of customers that enter the supermarket is greater than 10000 is 2.28%....
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- Spring '10
- Probability, Johnny Stromp, midterm mark