statistics

posted by .

A student scored 84 points on a test where the mean score was 79 and the standard deviation was 4. Find the student's z score, rounded to 2 decimal places

  • statistics -

    Use z-score formula.

    z = (x - mean)/sd

    x = 84
    mean = 79
    sd = 4

    Plug the values into the formula and calculate for your z-score.

  • statistics -

    1.25

  • statistics -

    1.25

  • statistics -

    64.25

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three students were reported as follows: Student Opie has a T-score of 60. Student Paul has a z-score of -1.00. …
  2. Statistics

    Suppose that two different tests A and B are to be given to a student chosen at random from a certain population. Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90, and …
  3. Stasistic

    On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three students were reported as follows: Student Opie has a T-score of 60. Student Paul has a z-score of -1.00. …
  4. Statistics- Math

    One student scored 54 on a math test for which the mean score was 50.5 and the standard deviation was 3.2. Another student scored 80 on a chemistry test for which the mean score was 75.2 and the standard deviation was 5.2. Which student …
  5. statistics

    the correlation between two tests given to 100 students in the junior clas is .70 the mean for the first test was 125 with standard deviation 20 the mean of the second test is 80 with standard devation 10 a student took the first test …
  6. social science statistics

    a professor was curious to whether the students in a very large class she was teaching who turned in their first scored differently from the overall mean on the test.The overall mean score on the test was 75 with a standard deviation …
  7. statistics

    2. Why is it important to know the mean and standard deviation for a data set when applying the empirical rule?
  8. stats

    If a student scored 75 points on a test where the mean score was 83.5 and the standard deviation was 3.1. The student's z score is ________.
  9. statistics

    1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, …
  10. Math CSET

    A student scores 96 on a test. The class average is 84, with a standard deviation of 4 points. What percentage of the class scored below this student?

More Similar Questions