1 Exampromax - Stuvia US
STA 210 Ch 5 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: Using the MOE give in in the article, what is the 95% confidence interval
for the true proportion of Americans in favor of allowing gay and lesbian
couples to marry?
Ans: 51.3% to 54.7%
Q: 1b
Ans: No. Could say the sample suggests a majority of Americans favor...
Exampromax - Stuvia US
Q: 1c
Ans: No. That's sampling variability.
Q: What are the Pew Center poll's sample and statistic?
Ans: We don't know the size of the sample, but the implication is that it is a
sample of Americans. That statistic reported is that 67% accept scientific evidence
of global warming.
Q: What are the population and the parameter?
Ans: Population is all Americans. Parameter would be the true proportion of all
Americans who accept scientific evidence of global warming, if it were possible to
ask all Americans.
Q: Using the MOE given in the article, construct a confidence interval for
the true proportion of all American who accept the scientific evidence of
global warming.
Ans: 67% +/- 2.9%
Q: What are the sample and the statistic for the CBS News poll?
STA 210 Ch 5 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: Using the MOE give in in the article, what is the 95% confidence interval
for the true proportion of Americans in favor of allowing gay and lesbian
couples to marry?
Ans: 51.3% to 54.7%
Q: 1b
Ans: No. Could say the sample suggests a majority of Americans favor...
Exampromax - Stuvia US
Q: 1c
Ans: No. That's sampling variability.
Q: What are the Pew Center poll's sample and statistic?
Ans: We don't know the size of the sample, but the implication is that it is a
sample of Americans. That statistic reported is that 67% accept scientific evidence
of global warming.
Q: What are the population and the parameter?
Ans: Population is all Americans. Parameter would be the true proportion of all
Americans who accept scientific evidence of global warming, if it were possible to
ask all Americans.
Q: Using the MOE given in the article, construct a confidence interval for
the true proportion of all American who accept the scientific evidence of
global warming.
Ans: 67% +/- 2.9%
Q: What are the sample and the statistic for the CBS News poll?
