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For example, if Y is annual income ($1000/year), X1 is educational level (number of years of schooling),X2 is number of years of work experience, and X3 is gender (X3 = 0 is male, X3 = 1 is female), then aftera linear regression of the data collected as below:Estimate Std. Error t value Pr(>|t|)(Intercept) 14 7 2 0.031X1 0.6 0.24 2.5 0.011X2 1 0.33 3 0.004X3 1 0.25 4 0.000Residual standard error: 2.7 on 16 degrees of freedomwe assume the estimated parameters are the true values.
Try to answer the questions below:
(a). What is the average difference of annual income between women and men if their otherconditions are the same?
(b). What is the average annual income of a female with 8 years of eduction and 20 years ofworking experience? What about a male of the same condition?
(c). What is the probability that a female with 16 years education and no work experiencewill earn more than $28,000/year?
Senate should not worry. He polls one legion of 1,000 men and finds that 340 of them are barbarians. What is the test statistic for this hypothesis test?
Shouldn"t say never, two have made it from maybe twenty. This one makes it, Does anyone know what the popular vote was.? What was the percentage for each leader?
Correlation based on Scatter Plot - Draw the scatter plot for the variables.
A statistician is interested in determining whether food preferences depend on the country. The data is presented below. What is the correct statistical test for analyzing the data?
The following data show levels of fertilizer use (lbs) and wheat yield (bushels) on repeated trials on a six acre plot.
What is the probability of selecting a female or an accounting major? Which rule of addition did you apply?
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
What type of probability distribution is presented? Find the probability that exactly 5 of his saplings will die in that first winter. Round to 4 decimal places. Find the probability that 5 or less of saplings will die in that first winter. Round to ..
For the statement: The mean amount of Pepsi in cans is at least 12 oz. Express the null hypothesis and the alternative hypothesis in symbolic form.
The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours. What is the probability that a sample mean would exceed 20 hours per week?
As part of study of the development of the thymus gland, researchers weighed the glands of five chick embryos after 14 days of incubation. Calculate the standard error of the mean.
Concrete blocks are to be used in the foundations of several buildings. The specifications state that the minimum arithmetic mean compressive strength of a sample of blocks must be 1,000 pounds per square inch (psi).
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