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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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RioNii RioNii
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Posts: 264
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7 months ago
Instructions:
a) Identify the type of probability distribution shown in the problem: binomial, hypergeometric, poisson etc.
b) Identify the given in the problem.
c) Solve for the probability.

3) Suppose you are randomly guessing in a ten multiple choice questions. Find the probability that  you will get exactly five correct answers. Each question has four possible choices.
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AnonymousAnonymous
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#1
7 months ago
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Use the binomial model:

\(f\left(x=5\right)=C_r^n\times p^x\times \left(1-p\right)^{n-x}=C_5^{10}\times \left(\frac{1}{4}\right)^5\left(1-\frac{1}{4}\right)^{10-5}=0.058\)

The probability of getting exactly five correct answers is 5.8%.
1

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RioNii Author
wrote...
#2
7 months ago
What is the given here sir?
Anonymous
wrote...
#3
7 months ago
You've been given the following:

Suppose you are randomly guessing in a ten multiple choice questions. Find the probability that  you will get exactly five correct answers. Each question has four possible choices.

n = 10 (total)
x = 5 correct answers (successes)
p = 1/4 since there is one correct choice in the possible 4
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