SOLUTION: Please help: 1. A production manager is conducting a Z test of her assembly line. She collects a sample of 64 items from the assembly line and determines that the test�s criti

Question 136631: Please help:
1. A production manager is conducting a Z test of her assembly line. She collects a sample of 64 items from the assembly line and determines that the test�s critical value is +1.96 and the Z statistic is +1.73. Based on this information she should (circle one): Accept Reject the Null hypothesis.
2. Smith Widget Company makes widgets for the medical industry. One particular customer requires widgets that meet FDA standards. One FDA standard requires Z-testing of at least 100 widgets at a time at the .08 level of significance. The specific standard requires that widgets be no smaller than a certain tolerance and no larger than a certain tolerance. The critical value(s) for such a test would be: __________

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. A production manager is conducting a Z test of her assembly line. She collects a sample of 64 items from the assembly line and determines that the test�s critical value is +1.96 and the Z statistic is +1.73. Based on this information she should (circle one): Accept Reject the Null hypothesis.
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Fail to Reject Ho
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2. Smith Widget Company makes widgets for the medical industry. One particular customer requires widgets that meet FDA standards. One FDA standard requires Z-testing of at least 100 widgets at a time at the .08 level of significance. The specific standard requires that widgets be no smaller than a certain tolerance and no larger than a certain tolerance. The critical value(s) for such a test would be: z = +-1.7597 for 2-tail Z-Test.
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Cheers,
Stan H.
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