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Two t-curves have degrees of freedom 12 and 20, respectively. Which one more closely resembles the standard normal curve? Explain your answer.
Which of the following measures only the strength of a relationship?
At the .01 significance level, can we conclude that there is more variation?
Depends on the satellite information illustrate what is the expected number µ of real forest fires on the Seward Peninsula.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level.
What is the probability that a soldier is a female?
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
At the .05 significance level, can we conclude that the guideline is still reasonable?
Establish an approximate design to MTBF required for a system that will result in an approximate minimum total cost over a five year period if the system is to be operated 7500 hours per year
Compute the range, variance, standard deviation, and coefficient of variation. Compute the Z scores. Are there any outliers?
To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the numerator of the test statistic should be the one with:
Assume that correlation coefficient between 2 variables is nearly zero. What does this say about relationship between them?
From a practical point of view, what is the difference between the frequency distribution and relative frequency distribution? Why is a cumulative relative frequency distribution so much more informative that just the relative frequency distributi..
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