Lesson 12.2: Day 2: Chi-Square Test for Independence Check Your Understanding For each of the following situations decide what type of chi square test is appropriate. Explain. 1. Shopping at secondhand stores is becoming more popular and has even attracted the attention of business schools. A study of customers' attitudes toward secondhand stores interviewed separate random samples of shoppers at two secondhand stores of the same chain in different cities. The two-way table shows the breakdown of respondents by gender. Store B Total Male 106 emale 203 150 353 Total 241 218 459 2. The General Social Survey (GSS) asked a random sample of adults their opinion about whether astrology is very scientific, sort of scientific, or not at all scientific. Here is a two- way table of counts for people in the sample who had three levels of higher education: Degree held Associate's | Bachelor's |Master's |Total Not at all 169 256 114 539 Opinion about scientific astrology Very or sort 65 65 18 148 of scientific Total 234 321 132 687 3. Casinos are required to verify that their games operate as advertised. American roulette wheels have 38 slots-18 red, 18 black, and 2 green. In one casino, managers record data from a random sample of 200 spins of one of their American roulette wheels. The table displays the results. Color Red Black Green Count 85 99 16