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A ballroom dancing club consists of 10 married couples. A committee consisting of 6 members is to be selected.
(a) How many possible committees can be formed?
(b) Two of the men refuse to serve on the committee together. How many combinations can be formed with this restriction?
(c) How many committees can be formed such that it contains both members of exactly one of the married couples
If a student studies for 15 hours, what score should the student expect on the next. What percent of the variation in the points earned on the exam is explained by the number of hours the student studies?
What is the probability that the sample proportion is less than 0.5? What is the upper limit of the sample proportion such that only 3%of the time the sample proportion would exceed this value
suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less
the average age of doctors in a certain hospital is 49.0 years old. suppose the distribution of ages is normal and has
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a. Determine the least-squares regression equation for y 5 total group revenue as a function of x1 5 num- ber of retail vehicles sold and x2 5 number of dealers in the group. Interpret each of the partial regression coefficients. b. At the 0.02 level..
Dealing with a large collection of categories complicates a regression, and software does not always provide the needed tools. The following procedure is often helpful.
Insurance companies collect annual payments from homeowners in exchange for paying to re- build houses that burn down.
Calculate the confidence intervals about a regression line. My data is log transformed and has high R-square value for what is called "power" equation in Excel. My CI's are narrow at the top of the graph and very wide near the bottom.
The average number of putts per hole for each player and their average driving distance is used to predict their total winnings using the multiple regression model where the deviations εI are assumed to be independent and Normally distributed with..
Using the probabilities above what is the expected size of family you draw?
What should the pass mark be set at if 15% are to fail? If the examiner wishes to grant the top 20% A's, what should be the cut-off mark for an A?
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