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2. You are planning a survey of starting salaries for recent computer science majors. In the...

2. You are planning a survey of starting salaries for recent computer science majors. In the latest survey by the National Association of Colleges and Employers, the average starting salary was reported to be $61,287. If you assume that the standard deviation is $3850, what sample size do you need to have a margin of error equal to $500 with 95% confidence? (report as an integer)

3. Suppose that in the setting of question 2 you have resources to contact 300 recent graduates. If all respond, what would be your margin of error? (report to the nearest integer).

4. Suppose that in the setting of question 2 you have resources to contact 300 recent graduates. If only 50% respond, what would be your margin of error? (report to the nearest integer).

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