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For an ANOVA, how does an increase in the sample sizes influence the likelihood of rejecting the null hypothesis and measures of effect size?

What is the critical value for a correlation with n=77, one-tailed, and an alpha level of 0.01?

A researcher collects data for participants of ages 8 to 18 years old and creates a regression equation of y = 0.25x + 2, where x = age in years and y = the average number of hours spent viewing technology screens. According to this equation, what is the average number of hours a 30-year-old spends viewing screens?

For an experiment involving 3 levels of factor A and 3 levels of factor B, with a sample of 8 in each treatment condition, what are the df values for the F-ratio for the AxB interaction?

Which of the following is the correct null hypothesis for an independent-measures t test?

The following table shows the results of a two-factor analysis of variance with two levels of factor A, three levels of factor B, and a separate sample of 5 participants in each of the treatment conditions.  Note that several values are missing in the table.  What is the missing value for the F-ratio for the A x B interaction?Source           SS       df      MS      Between        80     xx          A                       8      xx      xx    F =   xx    B                     xx      xx      20    F =  xx    AxB               xx      xx      xx    F =  xxWithin             xx        x      xx     Total              176      xx          

If other factors are held constant, which of the following sets of data would produce the largest value for an independent-measures t statistic?

In analysis of variance (ANOVA), the F-ratio is the _____________?

A student investigated how washing with soap affects bacteria levels on the hands. She tested three different methods—washing with water only, washing with regular soap, and washing with antibacterial soap. She randomly assigned 99 students to 1 of the 3 treatments. Participants washed their hands with the assigned method and cultures were taken and incubated. Based on the SPSS output below, was there a significant difference among the three hand-washing methods and why?

A two-factor study with two levels of factor A and three levels of factor B uses a separate group of 5 participants in each treatment condition.  How many participants are needed for the entire study?