Homework Help is Here – Start Your Trial Now!
Math
Statistics
In order to compare the average heights of children in 5th grade in two different states in US., one takes a random sample of 45 students in state A and a random sample of 65 students in state B. If the two sample means are 62 inches and 55 inches and the two sample standard deviations are 12 and 10, then what would be the standard error of the difference of two sample means? A. 1.24 B. 1.79 C. 1.57 D. 2.18 2.What would be the degree of freedom of the corresponding t distribution? A. 18.5 B. 41.1 C. 83.2 D. 108 3.What would be the t-critical value for the 95% confidence interval? A. 1.99 B. 2.02 C. 2.1 D. None of these

In order to compare the average heights of children in 5th grade in two different states in US., one takes a random sample of 45 students in state A and a random sample of 65 students in state B. If the two sample means are 62 inches and 55 inches and the two sample standard deviations are 12 and 10, then what would be the standard error of the difference of two sample means? A. 1.24 B. 1.79 C. 1.57 D. 2.18 2.What would be the degree of freedom of the corresponding t distribution? A. 18.5 B. 41.1 C. 83.2 D. 108 3.What would be the t-critical value for the 95% confidence interval? A. 1.99 B. 2.02 C. 2.1 D. None of these

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Topic Video
Question

In order to compare the average heights of children in 5th grade in two different states in US., one takes a random sample of 45 students in state A and a random sample of 65 students in state B. If the two sample means are 62 inches and 55 inches and the two sample standard deviations are 12 and 10, then what would be the standard error of the difference of two sample means?

A. 1.24

B. 1.79

C. 1.57

D. 2.18

2.What would be the degree of freedom of the corresponding t distribution?

A. 18.5

B. 41.1

C. 83.2

D. 108

3.What would be the t-critical value for the 95% confidence interval?

A. 1.99

B. 2.02

C. 2.1

D. None of these

Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
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.
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
SEE MORE TEXTBOOKS