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A correlation coefficient computed for n=18 and a=0.10 is r=0.692. . Using the t -test for the correlation coefficient, what are the critical values?
A) +1.734 B) +2.120 C) +1.746 D) +2.101
Two balanced dice are rolled and the number of dots facing up is added. Find the probability that the sum is 10 or 12.
The gambler is paid later as follows, depending on the number of winners he picked. What is his expected gain? Remember, a loss is a negative gain, and that the bookie keeps the gambler's $20.
The Human Relations Department of Electronics Inc. would like to include a dental plan as part of the benefits package. The question is: How much does a typical employee and his or her family spend per year on dental expenses?
Suppose three unfair coins are tossed, a nickel, a dime, and a quarter. The probability of tossing a head on the nickel is 0.35; the probability of tossing a head on the dime is 0.20
The salaries of the employees of a corporation are normally distributed with a mean of $25,000 and a standard deviation of $5,000.
For the binomial sample information summarized below, indicate whether the sample size is large enough to use the large sample approximation to construct a confidence interval for p.
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
If a woman purchases Super Cola, what is the probability that it is a diet soda?
A sample of 23 European countries found that variance of life expectancy was 7.3 years. Determine the 95% confidence interval estimate for variance of life expectancy in Europe?
Computing the probability value using normal distribution - find the normal distribution
Many people think that job satisfaction in workplace is directly related to annual income. To check the validity of this assumption survey of 430 active working adults in U.S was taken that relates their job satisfaction to their annual income.
Determine the largest village in terms of the population?
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