statistics

posted by .

sat scores around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what percentile rank within the population. show all calculations.
* please help me show how problem was solved.. i am in panic and no one has shown me how to work out he problem. thank you very much and talk soon.
mary hornbeck

  • statistics -

    find the z-score! which will tell you how many standard deviation you are away from the mean.

    formula: http://mathworld.wolfram.com/z-Score.html

    Then, look at the z score table in order to find the probability that corresponds to the z-score you found. This will give you the percentile!

  • statistics -

    can you please show calculations. to the question listed as above. the more i look at the explanation, the more i get confused. thank you very much.
    mary hornbeck

  • statistics -

    Cat can you please work out his problem because i am not sure if my answer is correct. can you show your calculations, please, please, please. thank you.

    sat scores around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what percentile rank within the population. show all calculations.

  • statistics -

    Mary,
    I think it is time for you to review your class notes to understand what z-scores are related to probability. If you have difficulty working out the solution with the above help given, you will have the same problems in your exams coming up in a month or so.

    If you happened to be absent from class on this subject, you can start with reading up your textbook, or other articles such as:
    http://en.wikipedia.org/wiki/Standard_deviation

    Repost if you have problems understanding the material.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    The distribution of scores on the SAT is approx. normal with mu= 500 and std dev=100. a)what proportion of the population have SAT scores above 650?
  2. statistics

    Sat scores l around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distributions. a person who scores 600 on the sat 1 has approximately what percentile rank within …
  3. statistics

    sat scores around the nation tend to have a mean score of about 500, a standard deviation of 100 points and are approximately normal distribution. a person who score 600 on the sat has approximately what percentile rank within the …
  4. statistics/please check calculations

    questions reads as follows: sat scores around the nation tends to have a mean score around 500, a standard deviation of 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what …
  5. Statistics

    SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of …
  6. Stats....how do i do this??

    SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of …
  7. statistics

    SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of …
  8. statistics college

    SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 A STANDARD DEVIATION OF ABOUT 100 POINTS AND ARE APPROXIMATELY NORMALLY DISTRIBUTED A PERSON WHO SCORES A PERFECT SCORE OF 800 ON THE SAT I HAS APPROXIMATELY WHAT PERCENTILE …
  9. statistics

    SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately normally distributed. What SAT I score within the population would have a percentile rank of …
  10. Statistics

    IF SAT scores have approximately a normal distribution with the mean being 550 and standard deviation of 90. How can I calculate the SAT scores of the 95th percentile?

More Similar Questions