Data

Warning: package 'tidyverse' was built under R version 4.1.3
-- Attaching packages --------------------------------------- tidyverse 1.3.1 --
v ggplot2 3.3.5     v purrr   0.3.4
v tibble  3.1.6     v dplyr   1.0.8
v tidyr   1.2.0     v stringr 1.4.0
v readr   2.1.2     v forcats 0.5.1
Warning: package 'ggplot2' was built under R version 4.1.3
Warning: package 'tibble' was built under R version 4.1.3
Warning: package 'tidyr' was built under R version 4.1.3
Warning: package 'readr' was built under R version 4.1.3
Warning: package 'forcats' was built under R version 4.1.3
-- Conflicts ------------------------------------------ tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
Warning: package 'ggpubr' was built under R version 4.1.3
Warning: package 'rstatix' was built under R version 4.1.3

Attaching package: 'rstatix'
The following object is masked from 'package:stats':

    filter

#Chek assumptions

For outliers

For normality

Using Shapiro

using QQ plot

Graphical Presentation

#Analysis

It shows tthe interaction between Hour and Dosage is not statistically significant. Hence, we proceed with pairwise t test comparision.

Comparisons for dosage variable

Comparisons for the hour variable