On a multiple- choice test, the chance of randomly guessing the correct answer to a question is 25%. if you guess the answer to every question on a 20 question test, how many question should you expect to get correct?
Hmm... what do you think the answer is?
You just multiply 25% * 20=________?
Sheesh
Stupid app
To calculate the expected number of correctly answered questions, you can multiply the probability of guessing each question correctly (25%) by the total number of questions (20).
So, 25% of 20 = 0.25 * 20 = 5.
Therefore, you should expect to get approximately 5 questions correct by randomly guessing on a 20-question test.
answer choices
A. 5 questions
B. 8 questions
C. 4 questions