SOLUTION: A certain company's IT department has found that 18% of all visitors to the company website arrive there in error. (They are actually looking for another website.) If this percenta
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Question 1096487: A certain company's IT department has found that 18% of all visitors to the company website arrive there in error. (They are actually looking for another website.) If this percentage is correct, what is the probability that, in a random sample of 7 visitors to the website, exactly 2 arrive in error?
Round your answer to three decimal places.
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
expansion using the binomial formula....
The probability that the visitor arrived on the website in error is 0.18; so the probability that they intended to reach the website is 0.82.
Then the probability that 2 out of 7 visitors reached the website in error is
You can do the calculation....
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