Exercise 40 Page 753

We are asked to make a simple experiment. For our experiment, we asked the team at MathLeaks to see how long it takes them to eat lunch every day. Our objective is to know if people spend more time eating lunch if they are with other people than if they are alone. To do this, we considered the following treatment and control groups.

Each group was made of $10$ people. We asked each person to inform us of their lunch time in minutes. Let's look at the results in a table.

Looking at the table, we can see that the people that regularly go to the office and lunch with other people generally take more time at lunch. We can add every value and divide the sum by $10$ to find the mean of each data set, and find out how much time on average each group takes for lunch.

We can see that, on average, our coworkers eat almost $10$ minutes slower when they are not alone. To generalize this for a greater population, we would need to repeat this experiment with a bigger sample. Keep in mind that this is just one possible answer for this question.