Essay
A bank claims that the mean waiting time in line is less than 4.3 minutes. A random sample of 20 customers hasa mean of 4.1 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the bankʹs claim using P-values.
Correct Answer:
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Standardized test statistic 
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Correct Answer:
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; Therefore,...View Answer
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