The incomes in a certain large population of college teachers have a normal distribution with mean $75,000 and standard deviation $10,000. Four teachers are selected at random from this population to serve on a committee. What is the probability that their average salary is more than $77,500?
Answer : 0. 1587
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In order to estimate the average time spent per student on the computer terminals at a local university, data were collected for a sample of 64 business students over a one-week period. Assume the population standard deviation is 1.6 hours. With a .95 probability, the margin of error is approximately
A. .392. B. 1.96. C. .20. D. 1.645.
You have witnessed one of your co-workers engaged in behavior that constitutes sexual harassment of one of the department secretaries. The secretary has spoken with you about the behavior and her concerns. She has also said, "Let me handle it." It seems that she is not able to handle it because the behavior has continued. You should:
a. Talk with her again. b. Report the behavior. c. Talk with your co-worker. d. Any of the above
The Supreme Court has rarely used the rule of reason analysis in antitrust cases
a. True b. False Indicate whether the statement is true or false
In an example of students and course prerequisites, the recursive relationship lies in which of
the following? A) Relationship between a particular student and a particular course B) Relationship between a particular student and another student C) Relationship between a particular course and another course D) Relationship between a particular course and a particular student