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1.0/ 1.0 PointsQuestion 1 of 20Click to see additional instructionsA college professor is curious if the location of a seat in class affects grades in the class. They are teaching in alecture hall with 240 students. The lecture hall has 10 rows, so they split the rows into 5 sections – Rows 1-2, Rows3-4, Rows 5-6, Rows 7-8, and Rows 9-10. At the end of the course, they determine the top 25% of grades in theclass, and if the location of the seat makes no difference, they would expect that these top 25% of students wouldbe equally dispersed throughout the classroom. Their observations are recorded below. Run a Goodness of Fit testto determine whether or not location has an impact on the grade. Let α=0.05.Enter the expected count for each section in the table below. Enter whole numbers without any decimals.Rows 1-2Rows 3-4Rows 5-6Rows 7-8Rows 9-10# in Top 25%148131015Expected Counts12121212121.0/ 1.0 PointsWeek 8 Knowledge Check Homework Practice QuestionsReturn to Assessment ListPart 1 of 4 - Chi-Square Test for Homogeneity7.0/ 8.0 Points
60/5Question 2 of 20MATH302 I008 Win 20Tests & QuizzesTests & QuizzesYou can access the new Success Center via the left hand navigation in your classrooms. This tool is updatedregularly and provides access to hundreds of relevant resources geared towards your academic and professionalgoals. Check it out!
1.0/ 1.0 PointsA large department store is curious about what sections of the store make the most sales. The manager has data fromten years prior that show 30% of sales come from Clothing, 25% Home Appliances, 18% Housewares, 13%Cosmetics, 12% Jewelry, and 2% Other.In a random sample of 550 current sales, 188 came from Clothing, 153 Home Appliances, 83 Housewares,54 Cosmetics, 61 Jewelry, and 11 Other. At α=0.10, can the manager conclude that the distribution of sales among thedepartments has changed?
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