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# Res 342 final exams

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Res 342 final exam, Res 342,Res 342 week 1,Res 342 week 2, Res 342 week 3
Res 342 week 4

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### Res 342 final exams

1. 1. RES 342 Final Exam CLICK & DOWNLOAD SOLUTION1) Res 342 Final Exam What are the critical z-values for a two-tailed hypothesis test if thesignificant level = 0.01?A. ± 1.96B. ± 2.33C. ± 2.58D. ± 1.652) In classical hypothesis testing, the test statistic is to the critical value what the __________.A. ‘p-value’ is to alphaB. critical value is to alphaC. test statistic is to the ‘p-value’D. level of significance is to the test statistic3) For a hypothesis test of a single population mean at 95% confidence level, a calculated Zscore of 1.7 supports the conclusion thatA. the population mean is greater than the hypothesized valueB. the null hypothesis cannot be rejectedC. the sample is biasedD. the population mean is less than expected4) If the paired differences are normal in a test of mean differences, then the distribution used fortesting is theA. normal distributionB. chi-squareC. student distributionD. F distribution5) One hundred women were polled and 60 reported successfully communicating an automobileproblem to an auto repairman. A sample of 150 men had 95 reporting the same success. Thevalue of the test statistic for a test of the equality of proportions isA. -0.5319B. 0.7293C. -0.419D. 0.27026) Weekly sales of iPods® at 20 Best Buy® stores are compared before and after installing anew eye-catching display. To determine if the display is effective in increasing sales, what typeof statistical test would you perform?A. Comparison of means using independent samples using a t-testB. Comparison of proportions using independent samples using a z-testC. Comparison of means using a paired z-testD. Comparison of means using a paired t-test7) When is it appropriate to use the paired difference t-test?A. Four samples are compared at once.B. Any two samples are compared.C. Two independent samples are compared.D. Two dependent samples are compared.