Statistics

Given that a population of scores is normally distriibuted with u=100 and o=8, determine the following:
a. The percentile rank of a score of 120
b. The perentage of scores that are below a score of 99
c. The percentage of scores that are between a score of 101 and 122
d. The percentage of scores that are between a score of 114 and 124
e. The score in the population aboe which 5% of the scores lie

1. 👍 0
2. 👎 0
3. 👁 78
1. if you visit

http://davidmlane.com/hyperstat/z_table.html

I think you will find it easy to answer all these questions, and if you play around some you should see how it all fits together.

1. 👍 0
2. 👎 0
posted by Steve
2. Sr

1. 👍 0
2. 👎 0

Similar Questions

1. Statistics

For a normal distribution with a mean of m = 80 and a standard deviation of s = 20, find the proportion of the population corresponding to each of the following scores. a. Scores greater than 85 b. Scores less than 100 c. Scores

asked by Lyndon on July 26, 2010
2. Math

I need help with this these two problem PLEASE!!! For a population with a mean of μ  80 and a standard deviation of   12, find the z-score corresponding to each of the following samples. a. M  83 for a sample of n  4 scores

asked by Tracy on February 1, 2013
3. 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? b)what proportion of of the population have SAT scores below 540? c)what is the

asked by Tommy on February 7, 2008
4. statistics

The sum of the squared deviation scores is SS = 20 for a population of N = 5 scores. What is the variance for this population? a. 4 b. 5 c. 80 d. 100

asked by Lyndyc on December 31, 2013
5. probability and statistics

a population forms a normal distribution with a mean of u=80 and a standard deviation of o=15. for each of the following samples, compute the z-score for the sample mean and determine whether the sample mean is a typical,

asked by darrell on January 6, 2012
6. statistics

Scores on a national exam assume a normal distribution with a population mean of 50 and population standard deviation of 10 points. A sample of 36 exam scores was selected from UCA with a mean score of 58 points. Using a

asked by Anonymous on April 18, 2014
7. Stats...is this correct??

Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be normally distributed. A person who scores 68 on this scale has what percentile rank within the population? z

asked by Jen on October 18, 2011
8. statistics

The distribution of scores is normal with a ì = 100 and ó =15. What proportion of the population have scores A) Above 130? B) Below 90? C) Above 110?

asked by chante on March 20, 2012
9. statistics

IQ scores are normally distributed with a mean u = 100 and a standard deviation o =15. Based on distribution, determine % of IQ scores between 100 and 120 =

asked by Dianne on June 21, 2012
10. statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard devaiton of 20. Use the 68-95-99.7 rule to find the following quantities: a. percentages of scores less than 100 b. relative frequency of

asked by terry on July 19, 2010

More Similar Questions