statistics

A large group of students has taken a college entrance exam. The scores on the exam are such that the mean = 52 and the standard deviation = 11

Find the probability that a student, selected at random, earned a score lower than 63.

  1. 👍 0
  2. 👎 0
  3. 👁 301
  1. Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    The overall probability of a student failing an exam is 40%. Calculate the probability that in a group of 6 students, at least 4 passed the exam.

    asked by susan on December 13, 2014
  2. physics

    Spaceship I, which contains students taking a physics exam, approaches Earth with a speed of 0.640 c, while spaceship II, which contains instructors proctoring the exam, moves away from Earth at 0.280 c, as in Figure P26.27. If

    asked by Andy on April 16, 2010
  3. Statistics

    In Professor Smith's statistics course, the correlation between students' total scores before the final exam and their final exam scores is r = 0.67. The pre-exam totals for all students in the course have a mean of 275 and a

    asked by Jannel on February 1, 2009
  4. Stats

    Suppose the scores of students on an exam are Normally distributed with a mean of 297 and a standard deviation of 66. Then approximately 99.7% of the exam scores lie between the numbers _____and _______such that the mean is

    asked by Please and Thank you!!! on October 27, 2014
  5. math

    A researcher was interested in the emotional effects of music on exam performance. Before their exam, a professor took one group of students into a room in which calming music was played. A different group of students were taken

    asked by Rachael on September 21, 2013
  1. Math

    Ten students achieve the following test scores on an exam: 78, 69, 45, 89, 74, 37, 99, 77, 100, 82. What is the interquartile range of these scores?

    asked by Sheila on April 17, 2017
  2. Statistics

    5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? b. What

    asked by Zac on March 5, 2012
  3. statistics

    Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course. 61,74,47,60,62,63,65,79,55,85. In all 135 students took the exam. The third quartile for all 135 scores was 69. How many

    asked by Victor on December 9, 2013
  4. statistics

    Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of 100. If a student is selected at random what is the probability that the student will score above

    asked by kevin on April 24, 2013
  5. eced

    A correlatibas .82 was found betweenen number of hours studied and final exam scores. A.students who stuief less received a high exam scores. B.students who studied who studied received lower exam scores. C.studying caused studies

    asked by Anonymous on September 4, 2015
  6. statistics

    The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Calculate the correlation coefficient r.

    asked by milly on September 28, 2011

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