When using a calculator, make sure you show appropriate calculator documentation as was shown in the videos to support your answers. No calculator documentation may result in no credit. For all hypothesis testing, assume ? = 0.05 significance level is given. Round all answers to three decimal places past the decimal. do calculations on the TI calculator. DO NOT Use the Stats ->

/21 9. Which is more important: Grades, Sports, or Popularity? 478 middle school (grades 4 to 6) students were asked whether good grades, athletic ability, or popularity was most important to them. The results are shown below, broken down by gender: Grades Sports Popular Total Boy 117 60 50 227 Girl 130 30 91 251 Total 247 90 141 478 We are testing whether this data provides evidence that grades, sports, and popularity are not equally valued among middle school students in these school districts. a. State the appropriate hypotheses for this test. [3pts] b. If grades, sports, and popularity are equally valued among middle school students in these school districts, what is the expected count for girls who say being popular is most valued. Show your work. [2pts] c. Find the contribution to the chi square test for girls who say being popular is most valued. Show your work. [2pts] /7 10 | P a g e