ex2_fa08 - STA 6126 Fall 2008 Exam 2 PRINT Name _ True or...

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STA 6126 – Fall 2008 – Exam 2 PRINT Name ____________ True or False: 1) If the test statistic and P-value for testing H 0 : μ =100 against H a : μ ≠100 are t=3.29 and P=0.001, respectively, then we have strong evidence that μ >100. 2) All else being equal, as we increase the sample sizes, the width of a 95% confidence interval for π 2 1 will increase. 3) Researchers report a t-statistic based on the paired difference t-test to be -2.40. Their sample is based on 16 pairs. They are justified in claiming the P-value for testing H 0 : μ D =0 against H a : μ D ≠0 is less than 0.01. 4) A chi-square test is being conducted to compare 3 groups’ distributions across a response variable with 4 categories. We will conclude there is an association at the α =0.05 significance level exceeds 12.59 5) Researchers report a 95% confidence interval for the difference between 2 population means to be (4.5, 7.8). The P-value based on a significance test will be greater than 0.05. 6)
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ex2_fa08 - STA 6126 Fall 2008 Exam 2 PRINT Name _ True or...

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