Question

possible results of a four-question quiz that has two true-false questions (T or F), and two multiple choice questions with four choices each (A, B, C, or D). find the probability that a result, if a student guesses answers to all 4 questions randomly, a. Has at least one answer of T. b. Has at least one answer of B.

Name: possible results of a four question quiz that has two true false questions t or f and two multiple choice questions with four choices each a b c or d find the probability that a result if a student 2
Uploaded: 2022-03-24T18:33:06-08:00
Duration: 1 min 2 s
Channel: Katy Gimbel
Description: possible results of a four question quiz that has two true false questions t or f and two multiple choice questions with four choices each a b c or d find the probability that a result if a student 2

          possible results of a four-question quiz that has two true-false questions (T or F), and two multiple choice questions with four choices each (A, B, C, or D). 
find the probability that a result, if a student guesses answers to all 4 questions randomly, 
a.  Has at least one answer of T.

b. Has at least one answer of B.

Added by Heather W.

Probability with Applications in Engineering, Science, and Technology

Matthew A. Carlton • Jay L. Devore 2nd Edition

Instant Answer

Solved by Expert Katy Gimbel

03/24/2022

Step 1

Since the probability of guessing a true answer is 0.5, the probability of guessing no true answers on two questions is 0.5 * 0.5 = 0.25. Show more…

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possible results of a four-question quiz that has two true-false questions (T or F), and two multiple choice questions with four choices each (A, B, C, or D). find the probability that a result, if a student guesses answers to all 4 questions randomly, a. Has at least one answer of T. b. Has at least one answer of B.