Post hoc tests are necessary after an ANOVA whenever

With one-way ANOVAs, the null hypothesis is represented by which of the following?  b0 the grand mean the total sum of squares the model sum of squares

Google Sheets can be used to find the critical value for an F distribution for a given significance level.  For example, to find the critical value (the value above which you would reject the null hypothesis) for α=0.05 with dfbetween=4 and dfwithin=30, enter =FINV(0.05,4,30) Enter this into Google Sheets to confirm you obtain the value 2.69. You conduct a one-factor ANOVA with 8 groups and 10 subjects in each group (a balanced design).  Use Google Sheets to find the critical values for α=0.1 and α=0.02 (report accurate to 3 decimal places).F0.1=F0.02=

A psychologist examines long term retention of a learned task in a sample of n = 6 rats. At 90 days of age, rats are trained on a discrimination task. Their initial performance is recorded to serve as a baseline for subsequent comparisons. Then their performance is tested again at 6 months, 1 year, 1 1/2 years, and 2 years of age. A partial ANOVA summary table follows. Provide the missing values.  Hint: would baseline be a condition? Answer: yes! Source                             SS         df          MS _________________________________________________ Between                       ____     ____       11         F = ____ Within                            ____     ____         Person                        ____     ____     Error                            40       ____      _____ Total                               152      ____