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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 .