Without using a for loop, find the mean value of each column in a data frame.
apply(df, 2, mean)
Reduce 18/72 to its simplest form.
After performing a hypothesis test, you find the p-value to be 0.035. Given that your alpha level is 0.05, what is the conclusion of your test (in general terms)?
At an alpha level of 0.05, we reject the null hypothesis.