please help with the 3 hw questions

Researchers want to determine if a stud ent's class standing is associated with whether they are a full-time or a part-time student. Test the claim of independence between class standing and full- time status. Use the o: = 0.08 level of signicance. a. State the null and alternative hypotheses. Select an answer v ? v Select an answer v Class standing and full-time status are independent. (There is no association H0: between class standing and full-time status.) Class standing and fulltime status are not independent. (There is an association between class standing and full-time status.) Select an answer v ? v Select an answer v Class standing and full-time status are independent. (There is no association H1 3 between class standing and full-time status.) Class standing and full-time status are not independent. (There is an association between class standing and full-time status.) b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -30 -20 JO 0 10 20 30 -30 -20 -IO 0 10 20 30 -30 -20 JO 0 I0 20 30 q q q Critical valuets}: (If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value. e. Decide: Select an answer v Ho 1'. Conclusion: At a: = 0.08 significance level, there Select an answer v enough evidence to conclude that there is an association between class standing and full-time status. The accompanying table is a study to determine whether a person's left/right handeness is associated with which ear they prefer to use to talk on a cell phone. Test the claim of independence between handedness and cell phone ear preference. Use the a = 0.07 level of significance. Right Ear Left Ear No Preference Right-Handed 106 82 62 Left-Handed 46 66 38 a. State the null and alternative hypotheses. O Select an answer v |? v Select an answer v O Handedness and cell phone ear preference are independent. (There is no Ho: association between handeness and cell phone ear preference.) O Handedness and cell phone ear preference are not independent. (There is an association between handedness and cell phone ear preference.) Select an answer v ? v Select an answer v O Handedness and cell phone ear preference are independent. (There is no H1 : association between handeness and cell phone ear preference.) O Handedness and cell phone ear preference are not independent. (There is an association between handedness and cell phone ear preference.) b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -30 -20 -10 0 10 20 30 -30 -20 -10 0 10 20 30 -30 -20 -10 0 10 20 30 Q Q Q Critical value(s):.1 _r____.___. (If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value. e. Decide: Select an answer v H0 1'. Conclusion: At or = 0.07 significance level, there Select an answer v enough evidence to conclude that there is an association between handeness and cell phone ear preference. Is a person's education level associated with their happiness level? The following data represent the highest level of educational achievement and happiness level of a random sample of people. Test the claim of independence between education level and happiness. Use the a = 0.09 level of significance. Happy Not Happy High School Diploma 39 37 Associate's Degree 44 20 Bachelor's Degree 42 18 a. State the null and alternative hypotheses. O Select an answer v |? Select an answer v O Education level and happiness are independent. (There is no association Ho: between education level and happiness.) O Education level and happiness are not independent. (There is an association between education level and happiness.) Select an answer v|? Select an answer v O Education level and happiness are independent. (There is no association H1 : between education level and happiness.) Education level and happiness are not independent. (There is an association between education level and happiness.) b. Find the critical value and sketch the rejection region. Sketch of Rejection Region: -30 -20 -10 0 10 20 30 -30 -20 -10 0 10 20 30 -30 -20 -10 0 10 20 30 Q Q Q Critical value(s):(If there are two critical values, list both values separated by a comma) c. Find the test statistic. d. Find the p-value. e. Decide: Select an answer v H0 1'. Conclusion: At a = 0.09 significance level, there Select an answer v enough evidence to conclude that there is an association between education level and happiness