Many universities use a student's ACT score to help with admission decisions as well as placement decisions. ACT Score 16 18 20 22 GPA 1.5 2.5 3 25 3.5 28 30 32 4 5 15 4.5 Step 3 of 3: Calculate the coefficient of determination, 2. Round your answer to three decimal places.

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For this math course, the final mark is a weighted average based on the following table: Quizzes 16% Assignments 19% Tests 59% Case Study 6% If a student earns 70% for quizzes, 67% for assignments, 71% for tests and 61% for the case study, calculate the student's final mark for the course. Round to two decimal places if applicable

Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke Prevention Study asked whether adding another anticlotting drug named dipyridamole would make a difference for patients who had already had a stroke. Here are the data on strokes during the two years of the study: Aspirin alone Apsirin & Dipyridamole Number of Patients This test is two-t led. What is the test statistic? -2.700 200 = V 200 Is there a significant difference in the proportion of strokes in the two groups? Test at a = 0.05. Round your answers to three decimal places, and round any interim calculations to four decimal places. #v Fill in the hypotheses below where p₁ denotes the proportion of patients in the aspirin group who suffered a stroke and på denotes the proportion of patients in the aspirin & dipyridamole group who suffered a stroke. Ho: P₁ Ha: P₁ Number of Strokes P₂ 60 P₂ 86 Using your answer from the previous question, find the p-value. ▼ Part 2 of 4 Part 3 of 4

Carmen and Rosanna are two employees in an electronics store. The store manager has put an emphasis on increasing the number of applications for the store credit card. The manager randomly selected 24 weeks for each employee and recorded the number of completed applications for each week, which is provided in the samples below. Each employee completed 21 applications in one of the weeks selected. Use Excel to calculate each employee's z-score for completing 21 applications. Round your answers to two decimal places. Carmen Rosanna11 56 1115 613 185 1114 1416 521 208 1110 97 1416 1513 1310 619 2118 95 1817 310 126 1712 1214 419 1017 8

Nationally 58.3% of federal prisoners are serving time for drug offenses. A warden feels that in his prison the percentage is even higher. He surveys 350 randomly selected inmates’ records and finds that 260 of the inmates are drug offenders. At
= 0.05, is he correct?