Exam 5: A Survey of Probability Concepts

A company's managers evaluated their employees into three classes: excellent performance, good performance, and poor performance. The following is a frequency distribution of the results. What is the probability that a randomly selected employee was rated excellent or good?

A coin is tossed four times. The joint probability that all four tosses will result in a head is ¼ or 0.25.

What is the probability that a flipped coin will show heads on four consecutive flips? _______________

The joint probability of two independent events, A and B, is computed as: P(A and B) = P(A) P(B).

In a survey of employee satisfaction, the following table summarizes the results in terms of employee satisfaction and gender. What is the probability that an employee is Male or Dissatisfied?

What are two events called when the occurrence of one event does not affect the occurrence of the other event? __________________

A board of directors consists of eight men and four women. A four-member search committee is randomly chosen to recommend a new company president. What is the probability that all four members of the search committee will be women?

A company set up a kiosk in the Mall of America for several hours and asked randomly selected people which color cell phone cover was their favorite. The results follow: What is the probability that black or orange are the favorite colors?

What does the complement rule state?

The probability of rolling a 3 or 2 on a single die is an example of conditional probability.