Twenty students take a math test. Their scores are listed here:

34 63730686226656362959485534419145399

Find the 80thpercentile of the students' scores, according to the method taught in the course. Choose the alternative closest to your answer.

(A) 81.6

(B) 85.0

(C) 86.5

(D) 88.0

(E) 89.8

Suppose that 80% of Swedish adults drank at least one drink alcohol during 2020. We draw a simple random sample of 10 Swedish adults.

b) Find the probability that at least 8 on the Swedes in the sample drank alcohol during 2020. Choose the alternative closest to your answer.

(A) 0.33

(B) 0.68

(C) 0.88

(D) 0.96

(E) 1.00