BUS 115 Final Exam Review - Calculations

BUS 115 Final Exam Review - Calculations - FINAL EXAM...

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FINAL EXAM PRACTICE QUESTIONS (SHORT ANSWER / CALCULATIONS) 1. Professor Godfrey wants to know the mean number of hours per week students spend prepar- ing for her class, plus or minus 1 hour. Since she needs to report this information to the Dean, she wants to be 99% confident that the results she reports are representative of all students in her class. She knows that some students spend a lot of time preparing for class, while others spend very little time preparing – in a pilot study of students last quarter, the variance in the responses was 3 hours. How many students should Professor Godfrey include in her sample? 2. UCR Housing Services wants to know what proportion of UCR students live on campus, plus or minus 2%. The Dean of Student Affairs would like to be 95% confident that the statistics are representative of all UCR students. The last time the campus collected this type of data, they found that 20% of UCR students live on campus. How many students should UCR Housing Ser- vices include in their sample? 3. UCR recently surveyed businesses in the Inland Empire to determine their attitudes about how to improve the link between the campus and the business community.
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