Use the normal distribution to the right to answer the questions. Standardized Test Composite Scores (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? H= 19.9 o = 5.3 19 21 Score (a) The percent of scores that are less than 19 is %. (Round to two decimal places as needed.) (b) About (Round to the nearest whole number as needed.) scores would be expected to be greater than 21.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
icon
Concept explainers
Question
---

### Normal Distribution Problems Using Standardized Test Scores

**Use the normal distribution to the right to answer the questions.**

(a) What percent of the scores are less than 19?  
(b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21?

**Graph Explanation:**
The graph provided is a normal distribution curve labeled "Standardized Test Composite Scores." 

- The mean (µ) of the distribution is 19.9. 
- The standard deviation (σ) is 5.3.

The x-axis represents the scores, with specific points marked at 19 and 21.

**Questions:**

(a) The percent of scores that are less than 19 is \( \boxed{\ \ \ \ } \)%.  
(Round to two decimal places as needed.)

(b) About \( \boxed{\ \ \ \ } \) scores would be expected to be greater than 21.  
(Round to the nearest whole number as needed.)

---
Transcribed Image Text:--- ### Normal Distribution Problems Using Standardized Test Scores **Use the normal distribution to the right to answer the questions.** (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? **Graph Explanation:** The graph provided is a normal distribution curve labeled "Standardized Test Composite Scores." - The mean (µ) of the distribution is 19.9. - The standard deviation (σ) is 5.3. The x-axis represents the scores, with specific points marked at 19 and 21. **Questions:** (a) The percent of scores that are less than 19 is \( \boxed{\ \ \ \ } \)%. (Round to two decimal places as needed.) (b) About \( \boxed{\ \ \ \ } \) scores would be expected to be greater than 21. (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 7 images

Blurred answer
Knowledge Booster
Continuous Probability Distribution
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman