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Multiple choice questions based on regression.
1. For a multiple regression model, SSR = 600 and SSE = 200. The multiple coefficient of determination is
1. 0.333 2. 0.275 3. 0.300 4. 0.75
2. A variable that takes on the values of 0 or 1 and is used to incorporate the effect of qualitative variables in a regression model is called
1. an interaction 2. a constant variable 3. a dummy variable 4. None of these alternatives is correct
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
Formulate a linear programming model for this problem.
In optimal solution, determine minimum time needed to complete project?
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviation (d) variance, and (e) standard deviation:
Explain finding value of test statistic and P-value also understand the result. At the .01 significance level can we compute that the mean fare has increased.
Confirm that these statements are accurate by finding the geometric mean rate of increase.
Mention your decision regarding the null hypothesis. If H 0 rejected can we conclude that treatment 2 and treatment 3 differ? Use 95 percent level of confidence.
would this prove that they are exceeding their goal, using = .025?
P-value to test hypotheses,
Using the data file below, construct a histogram and a frequency polygon. Describe the shape of this distribution.
For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.
If the population standard deviation is s = 10, is the sample sufficient to demonstrate a significant effect? Again, assume a two-tailed test with a = 0.05.
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