Author Question: A history professor decides to give a 12-question true-false quiz. She wants to choose the passing ... (Read 32 times)

segrsyd · **on:** Jul 24, 2018

A history professor decides to give a 12-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) 9 B) 7 C) 10 D) 8

Question 2

A nationwide survey claimed that at least 55 of parents with young children condone spanking their child as a regular form of punishment.

In a random sample of 100 parents with young children, how many would need to say that they condone spanking as a form of punishment in order to refute the claim at = 0.5? A) You would need 46 or less parents to support spanking to refute the claim.
B) You would need exactly 46 parents to support spanking to refute the claim.
C) You would need 47 or less parents to support spanking to refute the claim.
D) You would need more than 46 parents to support spanking to refute the claim.