A sample of 200 students at a Big-Ten university was taken after the midterm to ask
them whether they went bar hopping the weekend before the midterm or spent the
weekend studying, and whether they did well or poorly on the midterm. The following table contains the result.

Did Well in Midterm Did Poorly in Midterm
Studying for Exam 80 20
Went Bar Hopping 30 70

Of those who did well on the midterm in the sample,
percent of them went bar hopping the weekend before the midterm.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

idk

step-by-step explanation: