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Statistics for Decision Making
1. What is the formula for the Expected Value E(X) for ANY Probability Distribution.
2. What is the formula for the Expected Value E(X) of a Binomial Distribution?
3. What are the formulas to find the Standard Deviation and Variance for a Binomial Distribution?
Judy warned you in her statistics class that you would never be the same after taking that class. You find yourself thinking...If 40 mechanics are randomly selected, what is the probability that their mean rebuild time exceeds 8.1 hours?
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
let x1...xn1 be an iid sample from nu1o2 and let y1...yn2 be an iid sample from nu2o2 where parameters u1u2 and o2 are
At a state political rally, a spaker announced "we should raise test scores so that the students are above the state median". How would you analyze this statement?
Skilled labor is required to produce the handles and the blades. Cheaper unskilled labor is used to assemble and package the final products. There is sufficient storage area of store the finished product prior to shipping. Assume all raw material..
How many different possibilities exist for the set of iced-tea drinks that a given participant will taste? (Show how you calculated your answer.)
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
ratio of corresponding sides of similar triangles is 4:9, ratio of the area of the smaller to the larger triangle is?
Rob Ellis is a forensic accountant who has been engaged to investigate a case of electronic fraud at Weezer, a company that operates a chain of wholesale restaurant supplystores in the Houston area.
With a mean of 1.30 inches and standard deviation of 0.04 inch. If you select a random sample of 16 Ping-pong balls, what is the sampling distribution of the mean?
question 1aa random sample of 25 was drawn from a normal distribution whose standard deviation is 5. the sample mean
68% it will rain tomorrow. What is the probability it will not rain tomorrow?
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