Post a New Question

statistics/please check calculations

posted by on .

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 percentile rank within the population? please show all calculatons.

600-500=-100/100= 0.999999 would that be correct? if not how would you show the calculations?

*thank you very much.
mary hornbeck

  • statistics/please check calculations - ,

    Follow TutorCat's site to find
    z=(x-xmean)/standard deviation
    to get

    The next step is to look up a probability table, or use your calculator to find out the one-tail probability (i.e. every score lower than 600). For a probability table, try:

    to find that for z=1.0, the probability is 84.13%.

    Notice that for z=0 (exactly in the middle of the normal curve, or the mean =500, the probability is 0.5.

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question