For students who first enrolled in two-year public institutions in fall 2013, the proportion who earned a bachelor’s degree within six years was 0.236. The president of Joliet Junior College believes that the proportion of students who enroll in her institution have a higher completion rate.

In Problems, 

(a) State the null and alternative hypotheses in words, 

(b) State the null and alternative hypotheses symbolically,

(c) Explain what it would mean to make a Type I error, and
(d) Explain what it would mean to make a Type II error.