iQ12 Select one: A) The 95% confidence interval is (32.5, 56.1) and the 99% conf
ID: 3436031 • Letter: I
Question
iQ12
Select one:
A) The 95% confidence interval is (32.5, 56.1) and the 99% confidence interval is (28.8, 59.8).
B) The 95% confidence interval is (48.4, 72.0) and the 99% confidence interval is (44.7, 75.7).
C) The 95% confidence interval is (54.7, 78.3) and the 99% confidence interval is (51.0, 82.0).
D) The 95% confidence interval is (21.7, 45.3) and the 99% confidence interval is (18.0, 49.0).
E) The 95% confidence interval is (17.5, 41.1) and the 99% confidence interval is (13.8, 44.8).
A one-sample z-test was used to test the following hypotheses: H0 : mu = 47 and H1: mu 47. Select the pair of 95% and 99% confidence intervals (which were based on the z-test) that are consistent with the following conclusion: 'There is moderate, but not strong, evidence against the null hypothesis. In fact the population mean appears to be greater than 47.'Explanation / Answer
Given: the test is significant and population mean greater than 47
So the Both 95% and 99% confidence intervals should have lower limit > 47
The correct option is C
Select one:
A) The 95% confidence interval is (32.5, 56.1) and the 99% confidence interval is (28.8, 59.8).
B) The 95% confidence interval is (48.4, 72.0) and the 99% confidence interval is (44.7, 75.7).
C) The 95% confidence interval is (54.7, 78.3) and the 99% confidence interval is (51.0, 82.0).
D) The 95% confidence interval is (21.7, 45.3) and the 99% confidence interval is (18.0, 49.0).
E) The 95% confidence interval is (17.5, 41.1) and the 99% confidence interval is (13.8, 44.8).
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