Total degrees of freedom
In a one way ANOVA, the degrees of freedom for the rows is 6, for the columns it is 10, and for error it is 8. How many total degrees of freedom are there in this construction?
a. 120
b. 480
c. 24
d. 36
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Let three fair coins be tossed. Let A= ( all heads of all tails), B= ( at least two heads), and C= ( at most two tails). List the sample points in A,B,C respectively.
The average tread wear was found to be 50,000 miles with a standard deviation of 3,500 miles. What is the best estimate of the average tread life in miles for the entire population of these tires?
The Lansing Community College registrar's office is considering replacing some Canon copiers with faster copiers purchased from Kodak. The office's 4 Canon machines are expected to last 4 more years.
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Construct a 95% confidence interval for the population mean, based on the following sample size of n=5. 1,2,3,4, and 25. Then change the number 25 to 5 and recalculate the confidence interval.
The controller, Peggy Kingman, is concerned about the residential product line. She cannot understand why this line is not more profitable given that the installations of window coverings are less complex for residential customers.
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A summary of cash flows for Westward Travel Service for the year ended October 31, 2014, is shown below. Cash receipts: Cash received from customers $247,840 Cash received from additional investment of owner 14,900 Cash payments:
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