Fricker's is a family restaurant chain located primarily in the southeastern part of the United States. It offers a full dinner menu, but its specialty is chicken. Recently, Bernie Frick, the owner and founder, developed a new spicy flavor for the better in which the chicken is cooked. Before replacing the current flavor, he wants to conduct some tests to be sure that patron will like the spicy flavor better.
To begin, bernie selects a random sample of 15 customers. Each sampled customers is given a small piece of the current chicken and asked to rate is overall taste on scale of 1 to 20. A value near 20 indicate to participants liked the flavor, whereas a score near 0 indicates they did not like the flavor. Next, the same 15 participants.