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Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected?
A. direct cause-and-effect
B. reverse cause-and-effect
C. caused by third variable
D. negative effect
"MagTek" electronics has developed a smart phone that does things that no other phone yet released into the market-place will do. The marketing department is planning to demonstrate this new phone to a group of potential customers, but is worried abo..
Under what situations on lambda1 and lambda2 will this system have the steady state distribution? Describe your answer.
"If you took 40 employees at random from the corporation, there is a pretty good chance the average number of days absent would be 12 or more. That's what happened to us - chance variation." Is this a good defense? Justify your answer.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 175 and a standard deviation of 15. If an applicant is randomly selected, find the probability of a rating that is between 150 and 200.
A PC manufacturer claims that no more than 2% of their machines are defective. In a random sample of 100 machines, it is found that 5% are defective. The manufacturer claims this is a fluke of the sample.
1.a refrigerator contains 6 apples 5 oranges 10 bananas 3 pears 7 peaches 11 plums and 2 mangos. imagine you stick your
what is the probability that the mean of a random sample will be equal to or greater than the 97.5 percentile of its
A representative of the environmental protection agency (EPA) wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples.How many different samples are possible?
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
What extremely important characteristic of the data set is not considered in the hypothesis test?
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclusion would you reach? The sales results are as fol..
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