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1) How is correlation analysis used in a business decision?
2) What is the standard error of estimate? Describe with an example.
3) What are the coefficients of the linear regression model and what do they mean? What are the various statistics reported in a regression output?
4) How do outlying observations affect regression analysis?
Tavern has budget of $2,000 for beer for Super Bowl Sunday. Betty desires to find out number of gallons of each brand of beer to order so as to maximize profit. Create a linear programming model for this problem.
Would it be reasonable to conclude that the population mean is 63 pounds?
Assume we have three different samples each comprised of 20 different jurisdications. Our objective is to compare the seriousness of juvenile substance abuse across all the samples.
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.
Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class? How many are ineither class?
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
The F-test cannot be used to answer whether or not there is a significant difference between the means.
The number of passengers arriving at an airport terminal average 1200 each hour. To process passengers (check in, take luggage, etc) take an average of 6 minutes each. There are 6 airport staffers processing passengers. How long is the average wai..
Suppose n progeny are to be examined, and let P^ be the sample proportion of purple-owered plants. It might happen, by chance, P^ that would be closer to 1/2 than to 9/16. Find the probability that this misleading event would occur if:
Determine the area under the standard normal curve that lies: (a) to the left of Z = -2.31 (b) to the right of Z = -1.47 (c) between Z = -2.31 and Z = -1.47 (d) between Z = 1.47 and Z = 2.31
Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 10 classes.
At the .10 significance level you will test to determine if there has been an increase in selling time. Is this a 1 or 2 tail test?
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