Author Question: A literature professor decides to give a 15-question true -false quiz. She wants to choose the ... (Read 280 times)

sdfghj · **on:** Jun 24, 2018

A literature professor decides to give a 15-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 .10.

What score should be set as the lowest passing grade?
A) 9 B) 12 C) 10 D) 11

Question 2

We believe that 95 of the population of all Business Statistics students consider statistics to be
an exciting subject. Suppose we randomly and independently selected 21 students from the
population.

If the true percentage is really 95, find the probability of observing 20 or more
students who consider statistics to be an exciting subject. Round to six decimal places.
A) 0.340562 B) 0.376410 C) 0.283028 D) 0.716972