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A high school principal wanted to know if the racial makeup of her teachers mirrored that of the student body. The student body broke down into 47% White, 28% Latino, 15% African American, and 10% other. Of the 65 teachers, 42 were White, 4 were Latino, 15 were African American, and 4 were Other. Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.)
Use the five steps of hypothesis testing and explain your findings.
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
During the 2003 season, MLB took steps to speed up the play of baseball games in order to maintain fan interest; the following results come from a sample of 60 games played during the summer of 2002. And a sample of 50 games played during the summ..
Test the claim that the actual percentage is 53%. Use a 0.10 significance level.
What should the cut-off score be for the interviews? (Round to nearest whole number).
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
Name the inferential statistical test that would be used for the method of training and why?
With this important detail, are there any significant differences with LSD?
If a statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 48.0 and 53.0 minutes what is the probability that a given class period runs greater than 51.25 minutes.
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
With the test statistic you chose, work out the problem with solution using .05 level of significance if it applies.
Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
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