Question

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Use the following formula for calculating binomial probabilities to answer the question. (in picture)

What is the probability of getting exactly 5 “heads” in 10 coin flips?

A) 1/32
B) 63/256
C) 1/2
D) 193/256

Answer 1

Answer Choice B

Explanation:

63/256

Answer 2

Your question is related to the binomial probability

Although there is no picture, I will answer your question that is:

Find the probability of getting exactly 5 “heads” in 10 coin flips
Probability of getting a head = 1/5 and also 1/2 for getting a tail.
P(H) =1/2 and P(T) =1/2
Total # of flips =10; Total # Heads requested = 5

¹⁰C₅ = (PH)⁵.P(T)¹⁰⁻⁵

¹⁰C₅ = (1/2)⁵.P(1/2)⁵ = 63/256 (answer B)