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When testing for the significance of the slope parameter, which of the following are implied by the alternative hypothesis? Two answers correct. All or nothing credit.
1. The average value of the dependent variable is zero.
2. The independent variable affects the dependent variable.
3. The dependent variable affects the independent variable.
4. The independent variable causes the dependent variable to change.
5. The dependent variable causes the independent variable to change.
6. The average value of the independent variable is significant.
1.an instructor wanted to construct a confidence interval for the mean gpa of the students in his class. he used the
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suppose that 67 of the employees of a company participate in the companys medical savings program. let x be the number
Verify that the acf display a damped sine wave behavior and find the frequence and period of the acf
Population blood pressure (BP) of patients is normally distributed, with a mean of 127, and standard deviation of 8. A random sample of 49 patients in the hospital found an average BP of 125.
if you want to be 95 confident of estimating the population proportion to within a sampling error of plus or minus 0.05
Event A occurs with probability 0.2. Event B occurs with probability 0.3. Event C occurs with probability 0.4. If A, B, and C are disjoint, then
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what critical value t should be used to calculate the margin of error for a confidence intervalfor the mean of the
Also use the regression model to predict a student's average if he/she misses 4 classes.
the ebit of a firm is 300 the tax rate is 35 the depreciation is 20 capital expenditures are 60 and the increase in net
The newspaper has charged that your police department responds more slowly to 911 calls in poor neighborhoods than in more wealthy ones.
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