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Refer to the Buena School District bus data.
a. Refer to the maintenance cost variable. Develop a box plot. What are the first and third quartiles? Are there any outliers?
b. Determine the median maintenance cost. Based on the median, develop a contingency table with bus manufacturer as one variable and whether the maintenance cost was above or below the median as the other variable. What are your conclusions?
a research organization wanted to estimate the average number of hours a college student sleeps per night during the
The average buglary rate for a juisdiction has been 311 per year with a standard deviation of 50 what is the probability that next year the number of burglaries will be more than 350.
if you take the within groups sum of squares and divide it by the between groups degrees of freedom you getthe mean
question 1 a loaf of bread is normally distributed with a mean of 22 oz and a standard deviation of 0.5 oz. what is the
an economy consists of the three sectors agriculture energy and manufacturing. for each 1 worth of output the
The following table gives the coal usage and electricity generated by ten randomly selected power stations in South Africa in 1992:
a number is written with a magic marker on each card of a deck of 52 cards. the number 1 is put on the first card the
The researchers made 10 measurements of ATP, which had x = 0.84. What was the sample standard deviations for these measurements?
Write a few sentences explaining and interpreting the plot, which represents changesin Danish soft-drink sales over the course of a year alongside trafficaccidents. Note the dual Y-axes and their differing scales.
Use a 0.01 significance level to test the claim that the selection process is biased against Americans of Mexican ancestry. Does the jury selection system appear to be fair?
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
A sample of 350 hats is selected and the sample mean is 3.25 pounds. Using a level of significance of .10, is there evidence that the population mean weight of the hats is greater than 3.5 pounds? Fully explain your answer.
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