A researcher is performing a directional (one-tailed) one-sample t-test with a sample of n = 35 to evaluate the effect of a treatment that is predicted to decrease scores. If the researcher obtains t = –1.700, then what decision should be made?

What is the value of Σ(X – 2 )2 for the following scores?  Scores: 2, 3, 5

Which variable below is measured on the ratio scale?

A researcher is performing a directional (one-tailed) one-sample t-test with a sample of n = 35 to evaluate the effect of a treatment that is predicted to decrease scores. If the researcher obtains t = –1.700, then what decision should be made?

The results of a two-factor analysis of variance produce df = 1, 30 for the F-ratio for factor A, and df = 2, 30 for the F-ratio for the AxB interaction.  Based on this information, how many levels of factor B were compared in the study?

A researcher a UW-Madison tracked sophomore students sleep schedules (X) and exam scores (Y). The exam scores can be modeled using the equation Y = 6.63x + 24.33. If a student wants to get 84 points on the next exam, approximately how many hours should they sleep?

Which of the following is an example of a continuous variable?

What is the critical value for factor A in a Factorial ANOVA with N=46, 5 levels for factor A and 6 levels for factor B, and an alpha level of 0.01?

Which of the following accurately describes the effect of increasing the alpha level?

For the following data, what is the value of SSB?                    B1                    B2      A1       n = 5     M = 1    SS = 10        n = 5      M = 2     SS = 20      A2       n = 5     M = 1    SS = 10        n = 5      M = 4     SS = 20