Chi-Square Goodness of Fit Test

A researcher has four prototypes for a small Unmanned Aerial System controller and wants to know which one that users prefer. The researcher asks 120 participants to use each controller and annotate which one they liked best. At the conclusion of the study, the researcher hopes to have a clearly identified prototype that is best preferred among the four. The table below represents the number of times each prototype was chosen by the participants.

Prototype A

14

Prototype B

34

Prototype C

61

Prototype D

11

Use the five-step hypothesis testing process and StatCrunch to determine if there is a preferred prototype.