In: Statistics and Probability
A newspaper director intends to study the amount of time that the readers spend on reading the newspaper. She picks a sample of 28 individuals who read the newspapers on-line. The mean sample turns out to be 20, with standard deviation of 6 hours per month. Another sample of 35 individuals who read the newspapers in paper form. The mean sample for this group is 24, with standard deviation of 8 hours per month.
Given these two samples, run a test to verify if these two groups spend statistically different amount of time on reading the newspaper, at 5% significance level. (Assume the two populations have the same variance.)