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  3. the following data gives annual salaries (in thous

The following data gives annual salaries (in thousands) of randomly chosen employees with college degrees....

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The following data gives annual salaries (in thousands) of randomly chosen employees with college degrees. Some of these employees have only Bachelors' degrees and some have Masters'/PhDs. At ? =0.05, can we claim that the mean salaries of employees with Bachelors' degrees are lower?Bachelors': 89 78 67 89 100 65 45 37 68 68 78 80Masters'/PhDs: 120 130 78 69 88 101 112 160 200 88Test using: (a) a hypothesis test (b) a confidence interval

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