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The weight(in pounds)0f 6 vehicles and the variability of their braking distances 9in feet) when stopping on a dry surface are shown in the table. can you conclude that there is a significant linear correlation between vehicle weight and variability in braking disance on a dry surface? use a=0.01
weight,x 5970 /5370 /6500 /5100/5820/4800
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
The board of directors of Saner Automatic Door Company consists of 12 members, 3 of whom are women.
Thirty-five fourth-grade students were asked the traditional question "what do you want to be when you grow up? The responses are summarized in the following table:
Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates.
Give an example of some data that you could analyze with a Chi Square. Discuss the level of measurement that you would need to use this test.
By using the age midpoints x and the percentages of nurses, do we have a valid probability distribution? Describe.
Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals).
A polling organization plans to sample 1000 adult Americans to estimate the proportion of Americans who think crime is a serious problem in this country. (a) What is the parameter of interest to the polling organization? (b) What will be the stati..
Company have MBA degrees. Also, 64 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
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)?
If 3 different factor levels show a lot of variation between levels this implies:
A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph.
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