A Professor Wishes to Discover If Seniors Skip More Classes

question 55

Multiple Choice

A professor wishes to discover if seniors skip more classes than do freshmen.Suppose he knows that freshmen skip 2% of their classes.He randomly samples a group of seniors.Out of 2521 classes, this group skipped 77 classes.Based on the sample, does it appear that seniors skip more than 2% of their classes? State the critical value (CV) , test statistic (TS) , and decision from the test.(Use α = 0.01.)

• A) CV = 1.2816; TS = 3.78; reject H₀
• B) CV = 2.3263; TS = 3.78; reject H₀
• C) CV = 2.3263; TS = 3.08; reject H₀
• D) CV = 1.2816; TS = 3.08; reject H₀