Grades and AM/PM Section of Stats: There were two large sections of statistics this term at State College, an 8:00 (AM)

[answerhappygod]

Grades And Am Pm Section Of Stats There Were Two Large Sections Of Statistics This Term At State College An 8 00 Am 1 (84.53 KiB) Viewed 109 times

Grades and AM/PM Section of Stats: There were two large sections of statistics this term at State College, an 8:00 (AM) section and a 1:30 (PM) section. The final grades for both sections are summarized in the contingency table below. Observed Frequencies: O's A B с D F Totals AM 6 12 17 20 16 71 PM 19 21 17 13 7 77 Totals 25 33 34 33 23 148 The Test: Test for a significant dependent relationship between grades and the section of the course. Conduct this test at the 0.05 significance level. (a) What is the null hypothesis for this test? O Ho: The section (AM/PM) of a course and the grades are independent variables. O Ho: The section (AM/PM) of a course and the grades are dependent variables. (b) What is the value of the test statistic? Round to 3 decimal places unless your software automatically rounds to 2 decimal places. x2 = (c) Use software to get the P-value of the test statistic. Round to 4 decimal places unless your software automatically rounds to 3 decimal places. P-value = (d) What is the conclusion regarding the null hypothesis? O reject Ho O fail to reject Ho (e) Choose the appropriate concluding statement. We have proven that grades and section of the course are independent. The evidence suggests that there is a significant dependent relationship between grades and the section of the course. There is not enough evidence to conclude that there is a significant dependent relationship between grades and the section of the course.