Question

78.2% of the students study more that one day for the chapter test. Find the probability that a randomly selected student did not study more than one day for the test.

A. 0.218
B. 0.782
C. 0.328
D. 0.391

Answer 1

78.2% means that out of 100, 78.2 DO study. 100-78.2 gives you the amount of students that dont study (including me lol) which comes out to 21.8 . so since 21.8 out of 100 dont study, you can divide 21.8/100, and get your answer.

the answer is a