A true-false test has 5 questions. What is the probability of guessing the correct answers to all of the questions?
A. 1/25****
B. 1/10
C. 1/32
D. 1/7
Prob(Right) = 1/2
In 5 problems you want RRRRR
prob(RRRRR) = (1/2)^5 = 1/32
I'm done taking the test and the right answer was actually 1/32..
Good luck:)
I’m not sure
whats the answers
for unit 4 lesson 7 18 questions probability unit test please i need them
8th grade
To find the probability of guessing the correct answer to all of the questions on a true-false test, we need to determine the probability of getting one question correct and then raise that probability to the power of the number of questions on the test.
In a true-false test, there are two possible outcomes for each question: true or false. Since we are guessing, the probability of getting any single question correct is 1/2 or 0.5.
To find the probability of guessing all 5 questions correctly, we need to raise this probability to the power of 5 (since there are 5 questions). So the calculation is:
(1/2)^5 = 1/32
Therefore, the correct answer is C. 1/32.
2*2*2*2=2^5..... By multiplying 2 Five times and and the root number 5... the probability of answering ll of them correct is 1/23.
: )