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1. Income tax returns. In 2004, the Internal Revenue Service received 312,226,042 individual tax returns. Of these, 12,757,005 reported an adjusted gross income of at least $100,000, and 240,128 reported at least $1 million.27 If you know that a randomly chosen return shows an income of $100,000 or more, what is the conditional probability that the income is at least $1 million?
2. Conditional probabilities and independence. Using the information in Exercise 4.109, answer these questions.
(a) Given that a vehicle is imported, what is the conditional probability that it is a light truck?
(b) Are the events "vehicle is a light truck" and "vehicle is imported" independent? Justify your answer.
Insert the plot your created into a word document. Discuss the scatter plot and regression line. Are their outliers? Does your correlation coefficient support your analysis? Does it tell you anything else
Of 250 female users during the same period, 50% made at least two transactions while at the machine. At the 0.10 level, do males and females differ significantly in terms of making multiple transactions? Determine and interpret the p-value for th..
In a city, 65% of people drink coffee, 50% drink tea, and 25% both. What is the probability that a person chosen at random will drink at least one of coffee or tea? Will drink neither?
At a certain university, the average cost of books per student was 400.00 last semester. In a sample of 40 students this semsester, their average cost was 340.00 with a standard deviation of 80.00.
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data.
Assuming that this procedure yields a binomial distribution, find the mean and the standard deviation for the number of households in this sample who have cable TV.
using a 5 level of significance and a sample size of 26 what is the critical value for a one-tailed hypothesis
Criterion of realism or Hurwitz. Assume that the payoff from an investment depends on market conditions. Illustrate what is the criterion of realism value.
A study is conducted to assess the impact of caffeine consumption, smoking, alcohol consumption, and physical activity on risk of cardiovascular disease.
write the statement in symbols using the p and q given below. then construct a truth table for the symbolic statement
Convert these data to relative frequency distributions, one for the total United States, the other for the western states. Do the results appear to suggest any differences between total U.S. prices and those in the western states?
Does the normal distribution yield a good approximation of the actual results?
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