A random sample of 250 undergraduate students from a large university was found to contain 57 freshmen, 62 sophomores, 59 juniors, and 72 seniors. (a) What proportion of undergraduate students are freshmen? (b) What is the risk of being a sophomore?

a) 0.26

b) 0.264

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

Number of freshmen = 65

Number of sophomores = 66

Number of juniors = 61

Number of seniors = 58

(a) What proportion of undergraduate students are freshmen

(b) What is the risk of being a sophomore

The screen shots are for A/B :)