A Sample of Nine Students Is Selected from Among the Students

question 6

Multiple Choice

A sample of nine students is selected from among the students taking a particular exam. The nine students were asked how much time they had spent studying for the exam and the responses (in hours) were as follows:
18, 7, 10, 13, 12, 16, 5, 20, 21
Estimate the mean study time of all students taking the exam. Round your answer to the nearest tenth of an hour if necessary.

• A) 13 hours
• B) 12.2 hours
• C) 13.6 hours
• D) It is not possible to estimate the population mean from this sample data

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Definitions:

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