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  3. assume that random guesses are made for eight mult

assume that random guesses are made for eight multiple choice questions on a SAT test so...

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Basic Math

assume that random guesses aremade for eight multiple choice questions on a SAT test so thatthere are n=8 trials, each with probability of success (correct)given by p=0.20

a) prob of number x of correctanswers is exactly 7

b) prob of numer x correctanswers is at 4

c) prob of number x correctanswers is fewer than 3

d) probof number x corrwct answers is no more than 2

e) prob of no correctanswers

Answer & Explanation Solved by verified expert
4.2 Ratings (601 Votes)
Ans This is binomial probabilityn8 p 020 1p 080We find all probabilities using R n8p020 PX7 choose870207080871 000008192 PX4    See Answer
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