Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 625? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question
Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed.
(a) What percent of the SAT verbal scores are less than 625?
(b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
(a) Approximately 83.14 % of the SAT verbal scores are less than 625.
(Round to two decimal places as needed.)
(b) You would expect that approximately 450 SAT verbal scores would be greater than 525. (Round to the nearest whole number as needed.)
Transcribed Image Text:Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 625? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525? (a) Approximately 83.14 % of the SAT verbal scores are less than 625. (Round to two decimal places as needed.) (b) You would expect that approximately 450 SAT verbal scores would be greater than 525. (Round to the nearest whole number as needed.)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON