A 2010 survey asked 870 randomly sampled registered voters in California "Do you support? Or do y oppose? Drilling for oil and natural gas off the Coast of California? Or do you not know enough to say Below is the distribution of responses, separated based on whether or not the respondent graduated from college
A 2010 survey asked 870 randomly sampled registered voters in California "Do you support? Or do y oppose? Drilling for oil and natural gas off the Coast of California? Or do you not know enough to say Below is the distribution of responses, separated based on whether or not the respondent graduated from college
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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Could someone help with the first couple of part? I don't understand it, thanks!
Transcribed Image Text:A 2010 survey asked 870 randomly sampled registered voters in California "Do you support? Or do you
oppose? Drilling for oil and natural gas off the Coast of California? Or do you not know enough to say?"
Below is the distribution of responses, separated based on whether or not the respondent graduated
from college
(a) What percent of college graduates in this sample do not know enough to have an opinion on drilling
for oil and natural gas off the Coast of California?
%
College Grad
Yes
No
(b) What percent of the non-college graduates in this sample do not know enough to have an opinion
on drilling for oil and natural gas off the Coast of California?
%
(d) Find the positive critical value.
150
133
Support
Oppose
180 130
Do not know 105 131
Total
435 394
Conduct a hypothesis test to determine if the data provide strong evidence that the proportion of
college graduates who do not have an opinion on this issue is different than that of non-college
graduates. Test this claim at the 0.05 significance level.
(c) Find the test statistic. The standard error is 0.0313844.
(e) Find the negative critical value.
(f) Find the p-value.
arras
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