A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sarah has test scores of 91, 95, and 74. Sarah's quiz scores are 62, 81, 94, and 78. Her final examination score is 91. Use the weighted mean formula to find Sarah's average for the course. (Round your answer to one decimal place.)

Calculate a student's grades used weighted average follows. The second test was the midterm, it is worth twice the normal test. The fifth test will be the final and it is worth 3 times a normal test. What will he need under these conditions to earn a 90 average if the first four tests were 75, 92, 95, and 80?

Johannah is having  a reading contest with her friend Morgan.Johannah reads 2/5 of her  book,while Morgan reads 4/10.Who reads more of their book and wins the contest? Show a visual below.

A student receives test scores of 62, 73, and 91. The student's term project score is 88 and the homework score is 86. Each test is worth 25% of the final grade, the term project is 10% of the final grade, and the homework grade is 15% of the final grade. What is the student's weighted average score (final grade) in the class? 78.2 80 79.4 81.5 DOOO

Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored 75, 83, and 81 on her three in-class tests and also has a homework average of 88. Her professor calculates the class grade by finding the mean of five grades: three in-class tests, the homework average and the final exam. What is the minimum score Joselyn must earn on the final exam to have a class grade (mean) of 80? A. 67 B. 95 C. 70 D. 73

The mean weight of 150 students in a class is 60 kg. The mean weight of boys in the class is 70 kg. and that of the girls is 55 kg. Find the number of girls in the class. Solution :

Hanny

The histogram to the right represents the weights (in pounds) of members of a certain high-school math team. How many team members are included in the histogram? The histogram represents mathteam members. 6- 4- 2- 0- 105 115 125 135 145 155 165

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

What was Jason mean median and mode weight in pounds for the last 6 matches