STA 106 Homework Assignment 4 Please read and follow the instructions on Canvas. 1. (0 pts, no answers required) Review condence intervals from previous statistics courses that you have taken. 2. Download diagnostics.csv from Canvas. (a) (20 pts) Read the data into an R session and report summary statistics (or visualiza- tions) of the treatment and response, respectively. (b) (20 pts) Fit a one-way ANOVA model on the data and report the ANOVA table. (c) (20 pts) Conduct model diagnostics to investigate whether the errors {ij } have mean zero and constant variance. (d) (20 pts) Conduct model diagnostics to investigate whether the errors {ij } follow normal distributions. (e) (20 pts) Conduct model diagnostics to investigate whether the errors {ij } are inde- pendent with each other.

diagnostics: