Probability

Three Probability Questions
Filename: ma_is001.doc (27 Kb)
Date: 4-Jun-98
Submitted By: Rex Boggs
Format: MS Word Document
Description: Each player spins a spinner. The numbers are then added. If the total is odd, then player A wins $1. If the total is even, then player B wins $1. Show that the game is fair. If each player wins the _total_ showing on the two spinners, show that the game is not fair.

Guessing on a True/False Test
Filename: ma_is002.doc (15 Kb)
Date: 4-Jun-98
Submitted By: Ron Twiner
Format: MS Word Document
Description: A test consists of only True / False questions. A pass on the test is regarded as 50% or better. If a student is going to guess all answers, which test would he rather do:
(A) a test with 20 questions True / False questions
(B) a test with 15 questions True / False questions.

Justify your answer using probabilities.