Question 1:
(a) True
Confidence intervals are an alternative to hypothesis testing.
(b) False
As the level increases, the width increases.
(c) True
(d) False
The claim can be the null or alternative hypothesis.
(e) False
Question 2:
The 95% confidence interval will be:
= x ± t*(s/√n)
= 23 ± 2.18*(2.4/√13)
= (21.55, 24.45)
Question 3:
(a) n = (2.576/0.03)^2*0.5*(1 - 0.5) = 1844
(b) n = (2.576/0.03)^2*0.13*(1 - 0.13) = 834
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Can someone help me with these problems? Thank you. 1. True or False. (a) Confidence intervals...
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