A sociologist surveys a sample of college students to determine whether there are differences in the attitudes and behaviors of male and female students. The survey contains 20 questions. For one question, which asks how much time students spend studying each week, the difference between males and females is statistically significant with a P-value of 0.01. On all the other questions, the differences are not statistically significant. The sociologist concludes at the

α = 0.05 level that the time spent studying differs between males and females. Explain why this conclusion is not justified.