A weight loss program claims that the program participants have a mean weight loss of at least 11 pounds after 1 month. You work for a medical association and are asked to test this claim. A random sample of 30 program participants was selected and it was found that their mean weight loss (in pounds) was 9.8 pounds with a standard deviation of 3.1 pounds. At alpha = 0.05, do you have enough evidence to reject the program's claim? Use the critical value (rejection region) method.

Next, find the critical values(s). If there is more than one critical value, separate them by commas.