hat formula to use? 1. In a sample of students at a university (n=1200), the grade point average was 3.2. With a known population standard deviation of 0.9, estimate the grade point average for the entire university at a 90% confidence level. 2. In a sample of 125 inmates at a maximum-security prison, the average sentence was 8 years with a standard deviation of 3 years. Estimate the average sentence for the population of all prison inmates at the 0.05 alpha level. 3. In a sample of 450 graduating students at a university, 289 have found jobs. Estimate the proportion of the population of graduating students that have found employment at an alpha of 0.01.
hat formula to use? 1. In a sample of students at a university (n=1200), the grade point average was 3.2. With a known population standard deviation of 0.9, estimate the grade point average for the entire university at a 90% confidence level. 2. In a sample of 125 inmates at a maximum-security prison, the average sentence was 8 years with a standard deviation of 3 years. Estimate the average sentence for the population of all prison inmates at the 0.05 alpha level. 3. In a sample of 450 graduating students at a university, 289 have found jobs. Estimate the proportion of the population of graduating students that have found employment at an alpha of 0.01.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
What formula to use?
1. In a sample of students at a university (n=1200), the grade point
average was 3.2. With a known population standard deviation of
0.9, estimate the grade point average for the entire university at a
90% confidence level.
2. In a sample of 125 inmates at a maximum-security prison, the
average sentence was 8 years with a standard deviation of 3 years.
Estimate the average sentence for the population of all prison
inmates at the 0.05 alpha level.
3. In a sample of 450 graduating students at a university, 289 have
found jobs. Estimate the proportion of the population of graduating
students that have found employment at an alpha of 0.01.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman