In a cookie factory, 10% of the cookies produced are defective. If 8 cookies are randomly selected from a lot, what is the probability that exactly 2 are defective? a) 0.941 b)0.159 c) 0.951 d) 0.149
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In a cookie factory, 10% of the cookies produced are defective. If 8 cookies are randomly selected from a lot, what is the
a) 0.941 b)0.159 c) 0.951 d) 0.149
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- Assume 35% of dogs are adopted from a shelter. In a random sample of 500 dogs, what is the probability that more than 36% of these dogs will be adopted? A)0.0176 B)0.3192 C)0.200 D)0.680864% of all students at a college still need to take another math class. If 4 students are randomly selected, find the probability that a. Exactly 2 of them need to take another math class. b. At most 2 of them need to take another math class. c. At least 2 of them need to take another math class. d. Between 2 and 3 (including 2 and 3) of them need to take another math class.Approximately 20% of U.S. workers are afraid that they will never be able to retire. Suppose 10 workers are randomly selected. a. What is the probability that none of the workers is afraid that they will never be able to retire?
- There are 25 marbles in an urn: 12 are green and 13 are yellow. You reach into the urn and randomly select 4 marbles without replacement. What is the probability that at least one of the marbles is green? A. 0.0565 B. 0.9269 C. 0.2713 D. 0.1200 E. 0.9435According to reports, 30% of American adults have chronic insomnia. If 3 American adults are chosen at random, what is the probability that all 3 have chronic insomnia? A) 0.90 B) 0.027 C) 0.093 D) 0.075 E) 0.8437b. A survey of teenagers showed that 75% of them spend their pocket money on clothing. Find the probability that among the 6 teenagers selected at random, at most 2 spend their pocket money on clothing.
- American Airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 15 flights are randomlyselected, and the number of on-time flights is recorded.a. Find the probability that fewer than 10 flights are on time.b. Find the probability that at least 10 flights are on time.Of the 30 people working out in the gymnasium one afternoon, 25 are nonsmokers. If 5 are randomly selected, what is the probability that at least 4 are smokers?60% of all students at a college still need to take another math class. If 46 students are randomly selected, find the probability that a. Exactly 26 of them need to take another math class. b. At most 27 of them need to take another math class. C. At least 26 of them need to take another math class. d. Between 27 and 32 (including 27 and 32) of them need to take another math class.
- 65% of all students at a college still need to take another math class. If 4 students are randomly selected, find the probability that a. Exactly 2 of them need to take another math class. b. At most 2 of them need to take another math class. c. At least 2 of them need to take another math class. d. Between 2 and 3 (including 2 and 3) of them need to take another math class.62% of all students at a college still need to take another math class. If 47 students are randomly selected, find the probability that a. Exactly 26 of them need to take another math class. b. At most 28 of them need to take another math class. C. At least 27 of them need to take another math class. d. Between 26 and 32 (including 26 and 32) of them need to take another math class.64% of all students at a college still need to take another math class. If 4 students are randomly selected, find the probability thata. Exactly 2 of them need to take another math class. b. At most 2 of them need to take another math class. c. At least 2 of them need to take another math class. d. Between 2 and 3 (including 2 and 3) of them need to take another math class.
