Question Part Points Submissions Used 1 0 /1 1/5 Total 0 /1 The mean of 11 numbe

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Question Part Points Submissions Used 1 0/1 1/5 Total 0/1 The mean of 11 numbers is 49. Removing one of the numbers causes the mean to decrease to 44. What number was removed? 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. Sara has test scores of 77, 63, and 65. Sara's quiz scores are 61, 80, 88, and 96. Her final examination score is 77. Use the weighted mean formula to find Sara's average for the course. (Round your answer to one decimal place.) Question Part Points Submissions Used 1 0/1 1/5 Total 0/1 The mean of 11 numbers is 49. Removing one of the numbers causes the mean to decrease to 44. What number was removed? 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. Sara has test scores of 77, 63, and 65. Sara's quiz scores are 61, 80, 88, and 96. Her final examination score is 77. Use the weighted mean formula to find Sara's average for the course. (Round your answer to one decimal place.) Question Part Points Submissions Used 1 0/1 1/5 Total 0/1 Question Part Points Submissions Used 1 0/1 1/5 Total 0/1 The mean of 11 numbers is 49. Removing one of the numbers causes the mean to decrease to 44. What number was removed? 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. Sara has test scores of 77, 63, and 65. Sara's quiz scores are 61, 80, 88, and 96. Her final examination score is 77. Use the weighted mean formula to find Sara's average for the course. (Round your answer to one decimal place.) The mean of 11 numbers is 49. Removing one of the numbers causes the mean to decrease to 44. What number was removed? 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. Sara has test scores of 77, 63, and 65. Sara's quiz scores are 61, 80, 88, and 96. Her final examination score is 77. Use the weighted mean formula to find Sara's average for the course. (Round your answer to one decimal place.) Question Part Points Submissions Used

Explanation / Answer

a)let the no be x and the sum of remaining no be s.

so s+x/11=49 and s/10=44

this gives s= 440

so x= 49*11-440

so x=99   ANS

b) mean of sara's test score= (77+63+65)/3= 68.33

mean of sara's quiz score=(61+80+88+96)/4=81.25

mean of sara's Exam score=77

so Exam score of 77 is equivalent to score of 77 in 2 test or 4 quizes.

so equivalent no of quiz= 4+4= 8

total quiz score=61+80+88+96+77=402

so average for course=402/8=50.25   ANS

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