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GrogVix [38]
4 years ago
8

Assume that random guesses are made for 2 multiple-choice questions on a test with 5 choices for each question, so that there ar

e n=2 trials, each with probability of
success (correct) given by p=0.20. Find the probability of no correct answers.
Click on the icon to view the binomial probability table.
The probability of no correct answers is
(Round to three decimal places as needed.)
Mathematics
1 answer:
kap26 [50]4 years ago
4 0

Answer:

Probability of no correct answers is 0.640

Step-by-step explanation:

Given:

Number = 2

Probability of success (p) = 0.20

Find:

Probability of no correct answers

Computation:

Binomial probability distribution

P[x=0] = ²C₀(0.2)⁰(1-0.2)²⁻⁰

P[x=0] = 0.640

Probability of no correct answers is 0.640

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