The Cost of a College Education Has Increased at a Much

question 112

Multiple Choice

The cost of a college education has increased at a much faster rate than costs in general over the past twenty years. In order to compensate for this, many students work part- or full-time in addition to attending classes. At one university, it is believed that the average hours students work per week exceeds 20. To test this at a significance level of 0.05, a random sample of n = 20 students was selected and the following values were observed: Based on these sample data, the critical value expressed in hours:

• A) is approximately equal to 25.26 hours.
• B) is approximately equal to 25.0 hours.
• C) cannot be determined without knowing the population standard deviation.
• D) is approximately 22 hours.

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