math

posted by .

For a class of 43 students, for a certain test, the mean grade is 67 and the standard deviation is 7.

a) how many students should receive a C?
b) how many students should receive a B?
c) what score would be necessary to obtain an A?

  • math -

    Nuts to this. Critieria for A, B, C is not something that is agreed to . Do you have some criteria for A, B, and C?

  • math -

    sorry that's all the question says. My teacher is weird she gives questions that say nothing and expects us to no what they mean.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    A class of 43 students took an exam. Their mean grade average is 67 and standard deviation is 7. a) how many students should get a C?
  2. math

    For a class of 43 students fora certain exam, the mean grade is 67 and the standard deviation is 7. a) How many students should receive a C?
  3. statistics

    the average of final exam is 64, the standard deviation is 7. If the teacher set a rule that 1/4 of students who receive the poor grades should stay after class. lower than what mark should the students stay in school?
  4. Statistics

    Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. What were the scores of the students who were within one standard deviation …
  5. math

    Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. You may find it helpful to draw out this distribution before answering the …
  6. college

    Suppose that, for a certain exam, a teacher grades on a curve. It is known that the grades follow a normal distribution with a mean of 70 and a standard deviation of 7. There are 45 students in the class. How many students should receive …
  7. statistics

    a test has a mean score 73 with standard deviation of 12.students with scores greater than 85 receive an A. What is the percent of the students would we expect to get an A?
  8. math

    Statistics: Analyze student exam scores Students were given an exam with 300 multiple choice questions. The distribution of the scores were normal and the mean was 195 with a standard deviation of 30. you may find it helpful to draw …
  9. 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 …
  10. statistics

    The test scores of students in a class test have a mean of 65 and with a standard deviation of 8. What is the probable percentage of students scored more than 70?

More Similar Questions