El Microsoft Word - X QUE Math 125 Test 3 S X PT 7 Ways Psycholog X * Course Here x Q whatsup web - Se X 60 (66) WhatsApp X C:/Users/bosei/Desktop/Math%20125%20Test%203%20Spring%202022.pdf G 7. A group of nine individuals with high cholesterol levels were given a new diet designed to lower cholesterol levels. Cholesterol levels, in milligrams per deciliter, were measured before and after the implementation of the diet for each individual, with the following results: Participant 1 2 3 4 5 6 7 8 9 Before 254 246 225 216 205 228 233 223 222 After 199 201 195 208 184 203 210 195 198 A researcher claims that the mean reduction in cholesterol levels is more than 20 milligrams per deciliter. Assuming normality conditions are satisfied, test the researcher's claim using a = 0.05 significance level. Ho Ha : Type of test: P-value: Conclusion (in the context of the problem): 8. The Dean of the Business School at State University would like to test the hypothesis that no difference exists between the average final exam grades for the Introduction to Marketing course and the Introduction to Finance course. A random sample of eight students who took both courses was selected and their final exam grades for each course are shown below. Student Marketing 42 36 54 Finance Assuming normality conditions are satisfied, test the hypothesis using a = 0.10 significance level. Ho: Ha: Type of test: P-value: Conclusion (in the context of the problem): W X N S P prt sc delete 4 - 144 96 & backspa 5 6 8 9 T P GMicrosoft Word - Math 125 Test 3 S X PT 7 Ways Psycholog X * Course Hero x| whatsup web St x 6 (56) WhatsApp X C:/Users/bosei/Desktop/Math%20125%20Test%203%20Spring%202022.pdf G + 9. DuPont Automotive releases a Color Popularity Report which provides the percentages of car colors in North America. The most recent report is shown in the following table. Color White Black Silver Red Blue Other Probability 23% 18% 16% 10% 9% 24% A random sample of cars was selected, and the colors were recorded and shown in the following table. Color White Black Silver Red Blue Other Observed frequency 17 15 10 12 18 Using a = 0.10 level of significance, conduct an appropriate hypothesis testing to determine the validity of the Color Popularity report. Show the computed expected frequencies. Ho: Ha Type of test: P-value: or test-statistic: Conclusion (in the context of the problem): prt se delete 4- 144 12 7 & backspace 6 7 8 9 7 Y U P GBl: Microsoft Word - OLD Math 125 Test 3 S X PT 7 Ways Psycholog x * CourseHero | whatsup web-Se 3 60 (66) WhatsApp X C:/Users/bosei/Desktop/Math%20125%20Test%203%20Spring%202022.pdf 10. A beach community on a barrier island has three real estate companies that list rental properties by location which are classified as oceanfront, beach-block, or mid-island: The following contingency table shows the number of properties listed by each company along with their location. Company Location Diller Ferguson Kerr Oceanfront Beach-block 10 Mid-island Using a = 0.10, conduct an appropriate test to determine whether the real estate company and location of the rental property are independent of one another. Show the computed expected frequencies. Ho HA Type of test: P-value: or test statistic: Conclusion (in the context of the problem]: P 12 7 prt sc delete 4+ 144 & backspac 5 6 7 9 T P G