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Income tax returns
In a recent year, the Internal Revenue Service received 142,978,806 individual tax returns. Of these, 17,993,498 reported an adjusted gross income of at least $100,000, and 392,220 reported at least $1 million.
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?
A random sample of 81 credit sales in a department store showed an average sale of $68.00. From past data, it is known that the standard deviation of the population is $27.00.
Fit the model E(y) = β0 + β1x to the data.- Calculate the residuals for the model. - Plot the residuals versus x. Do you detect any trends? If so, what does the pattern suggest about the model?
What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully. Hint: Assume independent events. Why might the assumption of independence be violated?
you have to use matlabor just explain the steps to calculate these problems and submit it with your answersuppose that
The article "Statistical Behavior Modeling for DriverAdaptive Precrash Systems" (IEEE Trans. on Intelligent Transp. Systems, 2013: 1-9) proposed the following mixture of two exponential distributions for modeling the behavior of what the authors c..
balls are randomly removed from an urn that initially contains 20 red and 10 blue balls.a what is the probability that
Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to i..
Suppose that in a hypothesis test with null hypothesis = 13.0 at 0.05, that a value of 11.0 for the sample mean results in the null hypothesis not being rejected.
What is the percentile rank for someone who got 350 points and what percentage of students had between 275 and 375 points?
many elementary school students in a school district currently have ear infections. a random sample of children in two
How would figure out a 90% and 95% confidence interval for the below informaion? What would be the formula? Can I figure this out in Excel or Megastat? How would I do that?
Construct a scatterplot of the relationship between the 2 variables. Plot the regression line on this graph
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