Question: One would expect a student to be able to guess the answers to 10 items on a 20-item true-false test. The scores for 14 students on a 20-tiem true-false test follow. Please test the null hypothesis that the population mean of guess answers equals 10, against the non-directional alternative hypothesis. Use p < .05.

12 10 9 13 13 8 11 7 14 11 15 17

11 12