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A useful method for eliminating fluctuations in a time series is computing a ______.
From past history, the scores on a statistics test are normally distributed with a mean
score of 70 and a standard deviation of 5. To earn a "C" on the test, a student must be in
the top 25% of the class. A student would need to score at least ______ to receive a "C"
grade.
A bottle cap manufacturer with four machines and six operators wants to see if variation
in production is due to the machines and/or the operators. The ANOVA table follows.
What is the mean square for error?
In plotting paired data in a scatter diagram, the dependent variable is scaled on the
__________________.
In a graph of the uniform distribution, probabilities are represented by ___________.
What is the critical value of t for a two-tail test of the difference between two means, a
level of significance of 0.10 and sample sizes of 7 and 15? Assume equal population
standard deviations.
