What is the critical value for a regression analysis with n=25, 1 predictor variable, and an alpha level of 0.05?

A researcher would like to evaluate the effect of a new reading program for second-grade students. For the past five years, a standardized test given at the end of second grade has produced a mean score of µ = 45, σ = 12. A sample of n = 25 students are placed in the new program and at the end of the school year they obtain a mean test score of M = 51, s = 20. The researcher plans to use these data to test whether the new program has had a significant effect on reading scores. Which of the following hypothesis tests would be appropriate?

What is the value of SS (sum of squared deviations) for the following population?Population:  1, 1, 1, 5

How is η2 calculated for between-subjects ANOVA?

A researcher would like to evaluate the effect of three new reading program for second-grade students. For the school year, 1/4 of the second graders used program A, 1/4 used program B, 1/4 used Program C, and 1/4 used the current reading program. The researcher plans to use data from this study to test whether the new program has had a significant effect on reading scores. Which of the following hypothesis tests would be appropriate?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in main effect for factor A but not factor B?     B1 B2 A1 14 13 A2 6 ?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in no main effect for factor A?     B1 B2 A1 9 5 A2 7 ?

A sample of n = 100 scores is selected from a population with M = 80 with s = 20.  On average, how much error is expected between the sample mean and the population mean?

A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values.  What correlations are statistically significant with a = .05, two tails?

A repeated-measures experiment compares three treatment conditions with a sample of 10 participants.  If the data are analyzed with ANOVA, the analysis would have dftotal = ____.