Tammie wondered how her friends felt about their cell phone service. She randomly selected 10 of her friends who used company A and another 10 of her friends who used company B and asked if they felt their service was excellent, good, fair, or poor. Why should Tammie not use the chi-square test?

Step-by-step explanation:

The chi-square test is majorly used to test relationship/association between two categorical variables. The use of the chi square test is to ask the question: if there is a significant relationship between company A and B.

But this study only aims to compare company A and B cell phone service and not to establish a relationship between the two company's cell phone service

b. astronomers