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You are running a chi-squared test. You have 2 groups with 3 characteristics each, what would your critical value be with an alpha of .025?
A. 7.378
B. 2.773
C. 12.7062
D. 5.024
E. 12.833
Data from a National Health Survey show that men's average weight is normally distributed with a mean of 172 pounds and a standard deviation of 29 pounds.
What is the probability of winning if the rules are changed so that in addition to selecting the correct five numbers, you must now select them in the same order they are drawn?
Findout the variance also standard deviation for the 2 distributions above. Evalute the variation of the data sets.
A firm engaged in manufacturing undergarments for gents employs 100 male and 144 female workers. The average production per day of a male worker is 60 items with a variance of 15 items, and that of a female workers is 65 items with a variance of 1..
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate µ and σ in the formula for the normal approximation to the binomial, and show the final formula you would use without g..
A firm has tendered for two independent contracts. It estimates that it has probability 0.4 of obtaining contract A, and probability 0.1 of obtaining contract B. Find the probability that the firm:
Which of the following best explains how the F ratio examines differences among groups? A. The critical F is compared to the critical t.
Let (X,Y) have uniform distribution on the four points (-1,0), (0,1), (0,-1), (1,0). Show that X and Y are uncorrelated but not independent.
It seems that simulation could handle any situation or study. But is that always true? Discuss instances in which a simulation would be important and useful, and then a situation in which a simulation would not be appropriate.
Draw the complete decision tree and determine whether the product should be launched or not.
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb.
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