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Hypothesis testing for single population proportion.

An Accountemps survey of 150 executives showed that 44 out of them say that "little or no knowledge of the company" is the most common mistake made by candidates during job interviews (based on data from USA Today). Make use of a 0.05 significance level to test the claim that less than half (.5) of all executives identify that error as being the most common job interviewing error.

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