Question: Report from a new system set up to monitor Internet use by company employers indicate that 145 out of a random sample of 1100 employees at a corporation accessed Internet site that were clearly not related to their jobs over the last week. On average, employees who accessed no-job related sites spent 4.8 hours per week at such sits with a standard deviation of 2.1 hours.

1. Give a 95% confidence interval for the percentage of employees at the corporation who access no-job related sites.
2. Briefly explain on one short sentence how to interpret this interval
3. Statistics show that about 10% of people nationwide access non-job related sites at work. Is this company really any different from the national statistics?
4. Can we say that roughly 95% of people at this company spent in the range of 4.8 hours plus or minus 4.2 hours on no job related web sites?

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