Question: if a true-false test with 10 questions is given, what is the probability of scoring (A) exactly 80% by guessing (B) 80% or better by

if a true-false test with 10 questions is given, what is the probability of scoring

(A) exactly 80% by guessing

(B) 80% or better by just guessing

(A) P(exactly 80%) = ____ (round to five decimal places as needed)

(B) P(80% or better) = ____ (round to five decimal places as needed)

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