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The coming year is expected to be a good one with probability 0.70. Given that it is a good year, you expect that a dividend will be declared with probability 0.90. However, if it is not a good year, then a dividend will occur with probability 0.20.
a. Draw a probability tree for this situation, with the most appropriate choice for the first branch.
b. Find the probability that it is a good year and a dividend is issued.
c. Find the probability that a dividend is issued.
d. Find the conditional probability that it is a good year, given that a dividend is issued.
Chi-square tests are great to show if distributions differ or if two variables interact in producing outcomes. What are some examples of variables that you might want to check using the chi-square tests? What would these results tell you?
an insurance agent says the standard deviation of the total hospital charges for patients involved in a crash which the
If you repeatedly select two sample values, what is the mean value of the sample variance s2? The preceding parts show that s2 is an unbiased estimator of s2. Is s an unbiased estimator of u?
Each year, Business Week publishes information and rankings of MBA programs. The data file MBA Analysis contains data on several variables for eight reputable.
Conduct a two-tailed test of equality of mean stock return in the population of all stocks before and during the antitrust trials using the following data:
A distribution with m = 35 and s = 8 is being standardized so that the new mean and standard deviation will be m = 50 and s = 10. In the new, standardized distribution, your score is X = 45. What was your score in the original distribution?
If we want to increase our confidence level from 95% to 99%, what happens to our confidence interval?
Dem bones Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Only six fossil specimens are known.
A study of women in corporate leadership was conducted by Catalyst, a New York research organization. The study concluded that slightly more than 15%.
The scatterplot shows the age and number of hours of sleep "last night" for some students.
explain what will happen to the width of a confidence interval increase decrease or remain the same as a result of
listed are the ages in years of randomly selected race car drivers use a 0.05 significance level to test the claim that
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