Survey on Bathing Pets A survey found that 25% of pet

Chapter 5, Problem 25E

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QUESTION:

Survey on Bathing Pets  A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are randomly selected, find the probability that exactly 5 people have their pets bathed professionally.

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QUESTION:

Survey on Bathing Pets  A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are randomly selected, find the probability that exactly 5 people have their pets bathed professionally.

ANSWER:

Step 1 of 2

Let n denotes the total pet owners is 18.

Let p denotes the 25% or 0.25 of pet owners had their pets bathed.

We need to find q value.

q = 1-p

q = 1-0.25

q = 0.75

Hence, q=0.75.

Then the binomial distribution formula is

P(X) =  

Where, n=18, p=0.25, and q=0.75.

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