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The board of examiners that administers the real estate broker's examination in a certain state found that the mean score on the test was 504 and the standard deviation was 72. If the board wants to set the passing score so that only the best 80% of all applicants pass, what is the passing score? Assume that the scores are normally distributed. Round to the nearest whole number.
Estimate the population in 1600 and graph the population trend from 1600 through to 2000
A scatter plot and regression line can be used for all of the following EXCEPT
How can you or your department decide whether or not the variation is important? How could using a mean difference test help?
It falls into the region of alternative is accepted greater than .95
Using the .01 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing, and illustrate your answer with a sketch showing the comparison distribution, the cutoff (or cutoffs), and the scor..
The following survey questions have been established for a medical errors and patient safety business research paper:
Calculate η 2 , the percentage of variance accounted for by treatment.
Calculate the mean and the standard error of the sampling distribution of the sample means. Also, find the mean and standard error of the sampling distribution for samples of size 5.
Below you are given a partial computer output based on a sample of 16 observations.
The probability of an randomly selected person quits a team is 0.125. Assume the team has n members. Determine the smallest n that the team needs to have if the probability of the team has at least 20 members left is 0.9.
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
If a student scored 90 points on a test where the mean score was 82.2 and the standard deviation was 5.7. What steps do I do to find out the student's z score?
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