Chapter 7 - Hypothesis Testing with One Sample - Section 7.1 Introduction to Hypothesis Testing - Exercises - Page 360: 35

Type 1 error: If we reject the null hypothesis, $p \leq 0.20$, while actually the claim that at most 20% of applicants become police officers, is true. Type 2 error: If we fail to reject the null hypothesis, $p \leq 0.20$, while actually the claim that at most 20% of applicants become police officers, is actually false.

As given above