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1. The structure of a two factor study can be presented as a matrix with levels of one factor determining the rows and the levels of the second factor determining the columns. With this structure in mind, describe the mean differences that are evaluated by each of the three hypothesis tests that make up a two factor ANOVA.
2. what additional information is obtained by using a two factor design instead of two separate single factor designs ( one for each factor)
Suppose that you wish to perform a nonparametric test for a difference among the medians of three or more independent populations. Which of these tests would be appropriate?
Fit a least squares trend line to the merger data. What type of trend (linear or curved) might best fit to this time series? Compute the forecast for year 20 based on the trend (linear or curved) that best fits the data?
Generate a 95% confidence interval for the true mean total cholesterol levels in children.
Perform a chi-square test on the following data:
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
You are given the following frequency distribution for the number of errors 55 students made in a test:
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What is the value of your pooled proportion?
An analyst thinks that the economic conditions during the next year will either be Strong, Normal or Weak and she thinks that the Simpson Company's returns will have the following probability distribution.
A campus organization will select one day of the week for an end of year picnic. Assume that the weekdays, Monday through Friday, are equally likely and that each weekend day
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
If the company's report is correct, what is the probability that the average balance of an account in the sample is $383 or less?
Suppose that you're the Quality Manager for the Emerson D. Meritz Machine Tool Company. Your model IE566 grinding machine is afflicted by three types of defects classified as major (type A), serious (type B) and minor (type C).
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