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Show that in MLREG (multiple linear regression) the residual vector e is orthogonal to both the design matrix X and the fitted-vector (prediction-vector) Y-hat.
A national study has determined that people who work full time average 43.4 hours worked per week. Assume that the number of house worked per week for those who work full time is normally distributed.
Which of the following statements is true regarding a nonparametric test? We assume that the data has been chosen from a normally distributed population
The salaries of the employees of a corporation are normally distributed with a mean of $25,000 and a standard deviation of $5,000.
One of the most commonly used statistical techniques is the comparison of two means, also known as the t-test (for this you need quantitative, or interval level data).
Although the two samples have an identica winning percentage,one is significant and the other is not. Explain why the two samples lead to different conclusions.
Formulate and solve a linear programming model for Julia that will help you advise her on which offer to accept from the director if any. Julia's younger brother who is a freshman at Tech wants to help Julia increase her profits by loaning her so..
Test the hypothesis that the annual incomes of Teachers in areas of more than 500,000 are significantly more than those in areas of less than 100,000. Use the 5% level of risk.
Interpret the y-intercept of the line.
What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?
an american roulette wheel has 38 slots 18 are red 18 are black and 2 are green. let r be the number of spins until you
Each time that Ed charges his credit card, he omits the cents and records only the dollar value. If this month he has charged his credit card 20 times what can be said about the probability that the record shows at least $15 less than the actual a..
The athletic director claims that the atendance is the same as last year. What is the test value needed to evaluate the claim?
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