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Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed...

Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed to be approximately the same. A recruiting office thinks that the mean mechanical engineering salary is actually lower than the mean electrical engineering salary. The recruiting office randomly surveys 50 entry level mechanical engineers (sample 1) and 60 entry level electrical engineers (sample 2). Their mean salaries were 46000 and 47000, respectively. Their standard deviations were 3450 and 4210, respectively. Conduct a hypothesis test to determine if the mean entry-level mechanical engineering salary is lower than the mean entry-level electrical engineering salary, using ?=0.05.

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