A set of n = 12 pairs of scores has ΣX = 24, ΣY = 36, and ΣXY = 84. What is the value of SP for these data?​ Select one: a. 8 b. ​ 14 c. ​ -6 d. 12

In a scatter diagram of the data of 50 participants, how many points are plotted?       A. 5       B. 25       C. 50       D. 100

I need help with the first question:   Find the z-score value associated with a guess of 38.

ACT scores overall have a mean of 1017 and s = 207. If a college wants to admit only the top 30% of those, what score would they use as the minimum required? (Round to the appropriate whole number score). They would admit scores of and above.

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

A. Refer to the data and solve for the required measures of position. The following are the grades of 25 students in the first marking period of their Calculus I class. 65, 68, 70, 71, 73, 75, 75, 76, 78, 78, 79, 80, 83, 85, 87, 88, 89, 90, 90, 91, 93, 94, 95, 95, 97

Here are several z-scores.  Which person scored furthest from average? Ahab: Z = +1.2 Brianna: Z = -0.8 Cecilia: Z = -1.4 Darnell: Z = +0.7 Evelyn: Z = +0.2 Group of answer choices Brianna Cecilia Cannot tell from the information given Evelyn Darnell Ahab

For a population with u = 62 and o = 12, find the X value that corresponds to each of the following z-scores. Z = -0.25 Z = -1.50 z = 0.50 Z = 2.00

Solve.

Lisa's scores on tests for the assessment class are 93, 89, 87, and 83. She needs an 89.5 average to obtain an "A" in the class. Assuming that all tests, including the final, are equally weighted, what score must she obtain on the final exam to earn an "A"? CA Vimsi l