Solved: The average number of weeks that banner ads run at a web, Basic Statistics

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The average number of weeks that banner ads run at a web

Question: The average number of weeks that banner ads run at a Web site is estimated to be 5.5. You want to check the accuracy of this estimate. A sample of 50 ads reveals a sample average of 5.1 weeks with a sample standard deviation of 2.3 weeks. State the null and alternative hypotheses and carry out the test at the 5% level of significance.

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Basic Statistics: The average number of weeks that banner ads run at a web

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