Explain the level of significance

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1. A Company claims that the average time a customer waits on hold is less than 5 minutes. A random sample of 28 customers shows a mean wait time of 4.78 minutes with a sample standard deviation of 1.8 minutes. Test the Company's claim at a 1% (.01) level of significance. What is your conclusion?

2. A recent newspaper story claims that less than 12% of the current U.S. workforce are union members. A random sample of 250 workers showed that 23 were union members. Test the newspaper claim at a 5% level of significance. What is your conclusion?

Reference no: EM133063351

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