Class Assignment - Chapter 2: Problem 1: A sample data set with a bell-shaped distribution has mean x-bar = 6 and standard deviation s= 2. Find the approximate proportion of observations in the data set that lie: 1. between 4 and 8; 2. between 2 and 10; 3. between 0 and 12. Problem 2: A population data set with a bell-shaped distribution and size N= 500 has mean u= 2 and standard deviation a = 1.1. Find the approximate number of observations in the data set that lie: 1. above 2; 2. above 3.1; 3. between 2 and 3.1. Problem 3: A sample data set has mean x-bar = 6 and standard deviation s 2. Find the minimum proportion of observations in the data set that must lie: 1. between 2 and 10; 2. between 0 and 12; 3. between 4 and 8. Problem 4: A population data set of size N = 500 has mean u = 5.2 and standard deviation a = 1.1. Find the minimum number of observations in the data set that must lie: 1. between 3 and 7.4; 2. between 1.9 and 8.5. Problem 5: Scores on a final exam taken by 1,200 students have a bell-shaped distribution with mean 72 and standard deviation 9. 1. What is the median score on the exam? 2. About how many students scored between 63 and 81? 3. About how many students scored between 72 and 90? 4. About how many students scored below 54?
Class Assignment - Chapter 2: Problem 1: A sample data set with a bell-shaped distribution has mean x-bar = 6 and standard deviation s= 2. Find the approximate proportion of observations in the data set that lie: 1. between 4 and 8; 2. between 2 and 10; 3. between 0 and 12. Problem 2: A population data set with a bell-shaped distribution and size N= 500 has mean u= 2 and standard deviation a = 1.1. Find the approximate number of observations in the data set that lie: 1. above 2; 2. above 3.1; 3. between 2 and 3.1. Problem 3: A sample data set has mean x-bar = 6 and standard deviation s 2. Find the minimum proportion of observations in the data set that must lie: 1. between 2 and 10; 2. between 0 and 12; 3. between 4 and 8. Problem 4: A population data set of size N = 500 has mean u = 5.2 and standard deviation a = 1.1. Find the minimum number of observations in the data set that must lie: 1. between 3 and 7.4; 2. between 1.9 and 8.5. Problem 5: Scores on a final exam taken by 1,200 students have a bell-shaped distribution with mean 72 and standard deviation 9. 1. What is the median score on the exam? 2. About how many students scored between 63 and 81? 3. About how many students scored between 72 and 90? 4. About how many students scored below 54?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 6 images
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill