A study reported in the Journal of Research and Development in Education evaluates the effectiveness of social skills training and cross-age tutoring for improving academic skills and social communication behaviors among boys with learning disabilities. Twenty boys were divided into three groups, and their scores on the Test of Written Spelling (TWS) can be summarized as follows.
Calculate the entries of the ANOVA table using these results.
Answer to relevant QuestionsThe Bureau of Labor Statistics posts a table of average weekly hours worked by production workers on private, nonfarm payrolls by major industry. These seasonally adjusted data were downloaded from their website January 4, ...Do the similarities seem reasonable? What does this imply about these variables? Use a computer to form the extensions table; calculate the summations ∑x, ∑y, ∑x2, ∑xy, ∑y2; and find the SS(x), SS(y), and SS(xy) for the following set of bivariate data. Consider the “Married Couples’ Heights” scatter diagram presented in “Height Compatibility” on page 612: a. How can a husband and wife of the same height be located on the given scatter diagram? How many were ...Determine the bounds on the p-value that would be used in testing each of the following null hypotheses using the p-value approach:
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