Question

EOC 13.30 Homework Unanswered This question is based on the same scenario as EOC 13.28: Suppose that you are interested in whether anxiety level and problem-solving are related. You administer a standard measure of anxiety to 50 people and use the results to classify them as either "high" or"low' in anxiety. You also give each person the JUMBLE (a puzzle) from the daily paper and observe whether or not they solve it. Is anxiety level related to problem-solving ability? Your data is presented below Problem Solved? Solved Not Solved High 20 17 Low Perform the hypothesis test with.05 as the level of significance and match the statistics to the values. Premise Response Drag and drop to match 1 df 2 Critical value of chi square В 11.46 3 Obtained value of chi square С 5.99 = D 12.96 F 3.84 Submit Unanswered

Answer 1

HO :There is no association Null hypothesis Alternative hypothesi H1 :There is association Observed frequencies: Total 26 24 50 2 Attributes 20 17 27 23 Total corresponding row total x corresponding column total grand total Expected frequencies:E Total 26 24 50 2 14.04 12.96 27 Attributes 11.96 11.04 23 Total

Chi square table: (0-Е) O- E 11.96 14.04 11.04 12.96 5.96 35.5216 2.970033 35.5216 2.530028 35.5216 3.217536 5.96 35.5216 2.740864 11.45846 20 17 7 5.96 5.96 Test statistic O-E - 11.46 (obtained value of chi square) Degrees of freedom : (c-1) (r-1)- (2-1)(2-1)-1 Level of significance: α 0.05 ● Critical value: χα-- "-3.84 Decision Reject HO because obtained value > 3.84