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1. What is the interpretation of the Y intercept and the slope in the simple linear regression equation?
2. What is the interpretation of the coefficient of determination?
3. What are the assumptions of regression analysis and how do you evaluate them?
Explain why we need to use the t distribution. What assumption do you need to make?
Which of the following best explains how the F ratio examines differences among groups? A. The critical F is compared to the critical t.
Analyst computes production cost per unit in each order and averages these to get $50.
A randomized block design with 4 treatments and 5 blocks produced the following sum of squares values: SST = 1951, SSTR = 349, SSE = 188. The value of SSB must be:
Twenty three percent of automobiles are not covered by insurance. On a particular weekend, 35 automobiles are involved in accident.
At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
When planning the new baseball stadium for Washington DC, you are asked to find the break-even point for the number of luxury skyboxes built.
What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?
A professor asked her sophomore students, "How many drinks do you typically have per session? (A drink is defined as one 12oz beer, one 4oz glass of wine, or one 1oz shot of liquor.)"
The coffee/soup machine at the local bus station is supposed to fill cups with 6 ounces of soup. Ten cups of soup are brought with results of a mean of 5.93 ounces and a standard deviation of 0.13 ounces. Construct a 99% confidence interval for th..
Equation of the regression line - Evaluate the equation of the regression line and Find y' when x=47 years.
A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. Use the .01 significance level. Compute the p-value.
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