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QMCS 3311 (Chapter 9)

# QMCS 3311 (Chapter 9) - 1 . 2 .Atwotailedtestata.;z=B 3...

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1.  A student believes that the average grade on the final examination in statistics is at least 85. She plans on taking a sample to test her belie 2.  Read the  z  statistics from the normal distribution table and circle the correct answer. A two-tailed test at a .0694 level of significance;  z  =  B 3.  For a one-tailed test (upper tail) with a sample size of 900, the null hypothesis will be rejected at the .05 level of significance if the test stat  4. Refer to Exhibit 9-1: n  = 36 x-bar = 24.6 σ  = 12 The test statistic equals  A. 2.3  5. Refer to Exhibit 9-1: n  = 36 x-bar = 24.6 σ  = 12   The  p -value is  C. 0.0107  6.

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Refer to Exhibit 9-1: n  = 36 x-bar = 24.6 σ  = 12   If the test is done at a .05 level of significance, the null hypothesis should
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QMCS 3311 (Chapter 9) - 1 . 2 .Atwotailedtestata.;z=B 3...

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