[Steps Shown] A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight.
Question: A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. If a = 0.05, test the claim using confidence intervals.
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![[All Steps] Suppose you are using a](/images/solutions/MC-solution-library-69993.jpg "[All Steps] Suppose you are using a = 0.05 to test the claim that")
[All Steps] Suppose you are using a = 0.05 to test the claim that
(See Solution) The engineering school at a major university claims
![[All Steps] Compute the standardized test statistic,](/images/solutions/MC-solution-library-69995.jpg "[All Steps] Compute the standardized test statistic, X2, to test")
[All Steps] Compute the standardized test statistic, X2, to test
(Solution Library) Compute the standardized test statistic, X2, to
(Step-by-Step) Test the claim that s2 = 4.3 if n = 12, s2 = 3.6
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