math

The average score on a reading test for 58 students was 87.3. Twelve more students took the test. The average of the 12 students was 90.7. What was the average for all students?

  1. 👍
  2. 👎
  3. 👁
  1. 58 * 87.3 = 5063.4
    12 * 90.7 = 1088.4

    5063.4 + 1088.4 = 6,151.8

    6,151.8 / 70 = 87.9

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. I need help, I'm stuck...what is the correct answe

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4 The mean score on this test is: 6.5 The median score on this test is: 7.5

  2. Math

    The standard deviation of test scores on a certain achievement test Is 11.3. If a random sample of 81 students had a sample score of 74.6 , find a 90% confidence interval estimate for the average score of all students.

  3. Math

    The score for half of the students in a class on a certain test was 90. The score for another fourth of the students was 84. if the average (arithmetic mean) score for all of the students was 82, what was the average score for the

  4. ashford

    Mrs. Orlof teaches two history classes, one in the morning and one in the afternoon. Yesterday she gave the same test to both classes. Anyone who failed the test must take a retest. Since a greater percentage of students who took

  1. math

    1. When 100 students took a test, the average score was 77,1. Two more students took the test, the sum of the score was 125. What is the new average ? 2. The Basket Ball Team and Baseball team have a total of 24 players. There are

  2. Statistics

    Across the USA, results for these exams are normally distributed. What does that mean and why is this the case? If you were to create a histogram of all GRE scores, what would you expect the histogram to look like? Would it be

  3. psychology

    You find out that the average 10th grade math score, for Section 6 of the local high school, is 87 for the 25 students in the class. The average test score for all 10th grade math students across the state is 85 for 1,800

  4. Math

    Twelve students sit for an exam which has a maximum score of 100. The average of twelve scores achieved by the students in the exam was 95. What is the minimum mark a student could have scored?

  1. algebra

    On a quiz worth 5 points, four students earned a 5, seven students earned a 4, six students earned a 3, two students earned a 2, and one student earned a zero. Find the average score. (round to one decimal place)

  2. statistics

    At a local high school students were randomly assigned to one of two math teachers- Mrs smith and mrs jones. After the assignment, Mrs Smith had 30 students and mrs jones had 25 students. at the end of the year each class took the

  3. stats

    scores on a University exam are normally distributed with a mean of 68 and a standard deviation of 9. use the 68-95-99.7 rule to answer the following questions 1) what proportions of students score between a 59 to 77? 2) what

  4. mathematics

    Wonwoo earned a score of 940 on a national achievement test. The mean test score was 850 with a standard deviation of 100. Assume that test scores are normally distributed. If there were 100,000 students who took the test, how

You can view more similar questions or ask a new question.