Author Question: A history professor decides to give a 20-question true-false quiz. She wants to choose the passing ... (Read 69 times)

segrsyd · **on:** Jul 25, 2018

A history professor decides to give a 20-question true-false quiz. She wants to choose the passing grade such that the probability of passing a student who guesses on every question is less than 0.10.

What score should be set as the lowest passing grade?
A) 15 B) 14 C) 13 D) 12

Question 2

A multiple choice test has 30 questions, and each has four possible answers, of which one is correct. If a student guesses on every question, find the probability of getting exactly 6 correct.

A) 0 B) 144.9646 C) 0.14546 D) 104.72847