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# Test1a_KEY_Fa08 - Name 17 September 2008 IE330 Spring 2008...

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Name: ____________________________________________ 17 September 2008 IE330 Spring 2008 Test 1a No calculators, closed book, closed notes. Do not tear off any pages. Once you are finished, turn in the test and leave quietly. 1 of 9

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Name: ____________________________________________ 1. (True or False) For a hypothesis test, regardless of which conclusion is drawn the probability that a type I error has been made is equal to α. (If you fail to reject the null hypothesis, no type I error can be made.) 2. ( True or False) For a two-sided test, if the test statistic Z 0 is greater than Z α/2 or less than –Z α/2 then we can reject the null hypothesis. 3. Suppose we conduct a hypothesis test on a mean, and the test statistic Z 0 is found to be 9.6 with α = 0.05. For which of the following null hypotheses is the conclusion correct (choose all that are correct)? a. H0: μ = 0; Fail to reject H0 b. H0: μ = 0; Reject H0 c. H0: μ = 50; Fail to reject H0 d. H0: μ = 50; Reject H0 e. We cannot draw any of these conclusions from the data provided. (Once you have Z 0 , the hypothesized mean doesn’t matter, you just compare it to the critical values.) 4. ( True or False) When given the value of the test statistic Z 0 , we can obtain the p- value from the standard normal distribution (Z) table.
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Test1a_KEY_Fa08 - Name 17 September 2008 IE330 Spring 2008...

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