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An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 97 students in the school. There are 33 in the Spanish class, 36 in the French class, and 17 in the German class. There are 13 students that in both Spanish and French, 4 are in both Spanish and German, and 6 are in both French and German. In addition, there are 2 students taking all 3 classes.
If one student is chosen randomly, what is the probability that he or she is taking at least one language class?
If two students are chosen randomly, what is the probability that at least one of them is taking a language class?
the editor of a textbook company is trying to decide whether to publish a proposed business statistics textbook.
the worker at a carnival game claims that he can communicate with a small magic rock and to prove it he tells you to
Suppose that the scores of architects on a particular creativity test are normally distributed.What percentage of architects have Z scores. (a) above .10, (b) below .10
Assume the probability that a person has the desease is 0.08 for all people, independently of each other. Compute the total expected number of tests necessary.
Normal distribution with a mean value of 150 sec and a standard deviation of 20 sec. The fastest 10% are to be given advanced training. What task times qualify individuals for such training?
What is the probability that in a sample of 10 pieces: 5 or more will be defective?
The average balance for customer accounts in The Reserve Fund at the time it was frozen by the Securities Exchange Commission (SEC) was $22,500, with a standard deviation of $7,500.
a random survey of autos parked in student and staff lots at a large university classified the brands by country of
The economists in the Obama administration suggested that the stimulus package that they recommended in early 2008 would keep unemployment under eight percent.
What additional information is obtained from measurements on an interval scale compared to measurements on an ordinal scale?
The underlying data are in file XR10033. Identify and interpret the p-value for the test. Using the 0.025 level of significance, what conclusion will be reached?
Suppose 18 customers are selected at random. What is the probability that between two and six people inclusive want hot peppers?
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