The table to the right shows the results of a survey in which 2552 adults from Country A, 1109 adults from Country B, and 1055 adults from Country C were asked if they believe climate change poses a...
The table to the right shows the results of a survey in which 2552 adults from Country A, 1109 adults from Country B, and 1055 adults from Country C were asked if they believe climate change poses a large threat to the world. Complete parts (a), (b), and (c).
(a) Determine whether it is reasonably possible that the proportion of adults from Country A and the proportion of adults from Country B are equal and explain your reasoning. Choose the correct answer below.
A.
Yes, because the two confidence intervals do not overlap.
B.
Yes, because the two confidence intervals overlap.
C.
No, because the two confidence intervals overlap.
D.
No, because the two confidence intervals do not overlap.
(b) Determine whether it is reasonably possible that the proportion of adults from Country B and the proportion of adults from Country C are equal and explain your reasoning. Choose the correct answer below.
A.
Yes, because the two confidence intervals overlap.
B.
No, because the two confidence intervals overlap.
C.
No, because the two confidence intervals do not overlap.
D.
Yes, because the two confidence intervals do not overlap.
(c) Determine whether it is reasonably possible that the proportion of adults from Country A and the proportion of adults from Country C are equal and explain your reasoning. Choose the correct answer below.
A.
Yes, because the two confidence intervals do not overlap.
B.
No, because the two confidence intervals overlap.
C.
No, because the two confidence intervals do not overlap.
D.
Yes, because the two confidence intervals overlap.
Does climate change pose a large threat to the world?
Country
Yes
99% CI
A
29%
(0.267,0.313)
B
53%
(0.491,0.569)
C
30%
(0.264,0.336)
Homework Answers
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