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Question: Declaring significance. Suppose that a one-sided permutation test based on 250 permutation resamples resulted in a P-value of 0.04. What is the approximate standard deviation of this value? Would you feel comfortable declaring the results significant at the 5% level? Explain.
What is the coefficient of determination, and wat is its meaning?
When you give a casino $10 for a bet on the "pass line" in the game of craps, there is a 244/495 probability that you will win $10 and a 251/495 probability that you will lose $10. What is your expected value?
two samples of size 25 each yielding x-bar 6.47 sx 1.14 y-bar 6.17 and sy 1.166 show a significant difference
Thirty-two samples of 8 items each were collected from a process. The average sample mean is 12 and the average range is 0.10.
If a household is chosen at random from this suburb, what is the probability that this household has not installed an electronic security system?
Estimate the factor eeffects. Construct a normal probability plot of these eects. Which eeffects appear large?
Examine the data and determine if the distribution of IQ scores could be normal. You should confirm or reject normality by means of a visual inspection of the shape of the distribution.
Jen will call Cathy on Saturday with a 60% probability. She will call Cathy on Sunday with an 80% probability. The probability that she will call on neither of the two days is 10%. What is the probability that she will call on Sunday if she calls ..
Discuss the assumptions and conditions for using Student's t inference methods with these data. Here are some plots that may help you decide whether the methods can be used:
The physical representation of a steel strip-rolling mill is a damped-spring system [8]. The output thickness sensor is located a negligible distance from the output of the mill, and the objective is to keep the thickness as close to a reference v..
An investor wants to compare the risks associated with two different stocks. One way to measure the risk of a given stock is to measure the variation in the stock's daily price changes.
Write the null and alternative hypotheses to test whether the population variance is different from 6.0.
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