A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective.  The supplier claims that less than  2% of the items in the shipment are defective.  In order to determine the creditability of the supplier’s claim. The calculated value of the test statistic is -1.76. Determine the critical value of the test statistics at 1% level of significance

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective.  The supplier claims that less than  2% of the items in the shipment are defective.  In order to determine the creditability of the supplier’s claim. The calculated value of the test statistic is -1.76.

  1. Determine the critical value of the test statistics at 1% level of significance

 

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