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1. The staff at a small company includes: 4 secretaries, 20 technicians, 4 engineers, 2 executives, and 50 factory workers. If a person is selected at random, what is the probability that he or she is a factory worker?
2. In a genetics experiment 5 flowers out of 8 were bicolor, and the rest were solid color. If 3 of the flowers are selected at random without replacement, what is the probability that all 3 are bicolor?
3. If A and B are mutually exclusive events with P( A) = 0.70, then P( B):
4. Which of the following statements are true?
5. See pages 196-197 of your text for guidance on how to solve this problem
6. Find the variance of the following probability distribution.
7. A multiple choice quiz consists of 6 questions, each with 4 possible answers. If a student guesses at the answer to each question, then the mean number of correct answers is
8. The failure rate for taking the bar exam in Philadelphia is 41 %. If 375 people take the bar exam, what is the mean for the number of failures?
9. The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.
10. The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.