# statistics

Every year thousands of students take the SAT'S. RECENT TRENDS SHOW THAT THE SCORES ON THE VERBAL SECTION FOLLOW AN APPROX. NORMAL DISTRIBUTION WITH MEAN 550 AND STANDARD DEVIATION OF 110

68.26% OF THE STUDENTS WHO TAKE THE SAT VERBAL SCORE BETWEEN ______ AND _____
95.44% OF STUDENTS WHO TAKE THE SAT VERBAL SCORE BETWEEN ____ AND ____
99.74 % OF THE STUDENTS WHO TAKE THE SAT VERBAL SCORE BETWEEN ____AND ____

1. 👍 0
2. 👎 0
3. 👁 181
1. You have the mean 550 which is in the center of the normal distribution curve. and standard deviation is 110 which is how far the score is away from the mean.

The question is asking you for 68.26, 95.44 and 99.74 percents and is demonstrated by the emperical rule that 68.26% is one standard deviation away from the mean, 95.44% is 2 standard deviations away from the mean and 99.74% is 3 standard deviations away from the mean.

so, 68.26% wud just be 550+or- 110, or between 440 and 660

95.44% is 2 standard deviations away from the mean so it wud be 550+or-2(110) or between 330 and 770

finally the 99.74% is 3 standard deviations away from the mean so it wud be 550+or-3(110) or between 220 and 880 (which doesn't make sense cuz no one can get 880 on a verbal sat score) :D

1. 👍 0
2. 👎 0
posted by Tarun

## Similar Questions

1. ### statistics

every year thousands of students take the SAT'S. Recent trends show that the scores on the verbal section follow an approx. normal distribution with mean of 350 and stand. deviation of 110 A)a student is chosen at random. it is

asked by todd on February 10, 2008
2. ### Statistics

Scores on the SAT verbal test in recent years follow approximately N(504,111) distribution. What is the proportion of students scoring between 450 and 550? How high must a student score to place in the top 10% of all students

asked by Rae on November 24, 2012
3. ### Statistics

Among first year students at a certain university, scores on the Verbal SAT follow the normal curve; the average is around 550 and the SD is about 100. a) what percentage of these students have scores in the range 400 to 700? b)

asked by Elise on February 17, 2012
4. ### statistics in psychology

An analysis of the combined SAT scores (Verbal + Math) of a sample of psychology majors at one school indicated that the mean was 939 and the standard deviation was 166. Show your calculations used the answer the following two

asked by freddy on May 12, 2011
5. ### Statistics

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to limit the margin of error of your

asked by Sara on May 2, 2015
6. ### CRJ303-Statistics question

Re-worded from the "Study Questions" part of Chapter 5 from this site: "Student Study Site for Essentials of Social Statistics for a Diverse Society" Please show the steps for each question "When the Scholastic Aptitude Test (SAT)

asked by Michael on December 7, 2012
7. ### statistics

SAT Exam Scores – A school administrator wonders if students whose first language is not English score differently on the math portion of the SAT exam than students whose first language is English. The mean SAT math score of

asked by Liz on October 7, 2011
8. ### statistics

Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Their new scores are listed below. Construct a 95% confidence interval for µ d (the true mean

asked by Anonymous on December 6, 2013
9. ### math

The distriubution of the SAT scores in math for an incoming class of business students has a mean of 580 and standard deviation of 25. Assume that the scores are normally distributed. a. Find the probability that an individual's

asked by sri on July 20, 2014
10. ### 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

More Similar Questions