Road Rage

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A coin is tossed four times. The probability is ¼ or 0.25 that all four tosses will result in a head face up. Answer Correct Answer: False A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of the employees needed corrective shoes, 15% needed major dental work and 3% needed both corrective shoes and major dental work. What is the probability that an employee selected at random will need either corrective shoes or major dental work? Correct Answer: 0.20 A group of employees of Unique Services will be surveyed about a new pension plan. In-depth interviews with each employee selected in the sample will be conducted. The employees are…show more content…
What is the probability that on a randomly selected day she will have five messages? Correct Answer: 0.175 David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. What is the probability that more than ten and less than fifteen customers pay in cash? Correct Answer: 0.380 David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. What is the probability that at least ten pay in cash? Correct Answer: 0.575 Which of the following is NOT a characteristic of a binomial probability distribution? Correct Answer: Each outcome results from two trials The weight of an offensive linesman may be 205.15 pounds, 210.23 pounds, 225.05 pounds or 219.14 pounds. What is this an illustration of? Correct Answer: Continuous random variable The variance of a binomial distribution is found by η π (1 - π). Correct Answer: True The mean of a binomial distribution is the product of n and π. Correct Answer: True A true-false test consists of six questions. If

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