Internet use poll, II The same poll as in Exercise 25 alsoasked the questions “Did you use the Internet yesterday?”and “What is your educational level?” Is the response to the question about the internet independent of educa-tional level? a) Under the null hypothesis, what are the expected values?b) Compute the x2statistic. c) How many degrees of freedom does it have?d) Find the P-value.e) What do you conclude? Did You Use theInternet Yesterday?Yes No EducationLess Than High School 209 131High School 932 550Some College 958 346College Grad 1447 247
Internet use poll, II The same poll as in Exercise 25 alsoasked the questions “Did you use the Internet yesterday?”and “What is your educational level?” Is the response to the question about the internet independent of educa-tional level? a) Under the null hypothesis, what are the expected values?b) Compute the x2statistic. c) How many degrees of freedom does it have?d) Find the P-value.e) What do you conclude? Did You Use theInternet Yesterday?Yes No EducationLess Than High School 209 131High School 932 550Some College 958 346College Grad 1447 247
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Internet use poll, II The same poll as in Exercise 25 also
asked the questions “Did you use the Internet yesterday?”
and “What is your educational level?” Is the response
asked the questions “Did you use the Internet yesterday?”
and “What is your educational level?” Is the response
to the question about the internet independent of educa-
tional level?
tional level?
a) Under the null hypothesis, what are the expected values ?
b) Compute the x2
statistic.
b) Compute the x2
statistic.
c) How many degrees of freedom does it have?
d) Find the P-value.
e) What do you conclude?
d) Find the P-value.
e) What do you conclude?
Did You Use the
Internet Yesterday?
Yes No
Internet Yesterday?
Yes No
Education
Less Than High School 209 131
High School 932 550
Some College 958 346
College Grad 1447 247
Less Than High School 209 131
High School 932 550
Some College 958 346
College Grad 1447 247
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