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From the following information for Alfred Industries compute the overhead spending variance and the volume variance:
Standard manufacturing overhead based on normal monthly volume:
Fixed ($300,000 divided 20,000 units)............................................ $15.00
Variable ($100,000 divided 20,000 units)......................................... 5.00 $20.00
Units actually produced in current month.......................................... 18,000 units
Actual overhead costs incurred (including $300,000 fixed)............... $383,800
Prepare a scatter plot and Interpret the meaning of slope, b1, in this problem
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
The following table shows SAT scores (on the old SAT with only two sections) for a sample of students. Give the equation of the least squares regression equation.
What is the probability that all three students pick exactly the same card?
What is the probability that at least three students choose Supreme Chocolate?
Use drinking as an excuse for outrageous behavior. including public nudity and dancing on tables. Find the standard error of this estimate. and interpret.
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Given the following frequency distribution, find out the mean, variance, and standard deviation.
The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
Let Y be the number of envelopes for which the machine fails to remove a check. Using the Central Limit Theorem to approximate P{Y≤10}.
Assuming the nurses surveyed were a random sample from the population of all nurses in the United States, we can use these data to test the null hypothesis H0 that there is no association between the row and column variables in this two-way table...
P-value to test hypotheses,
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