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Author Question: An auditor reviewing the invoices of a small company finds that there are errors in 1.5 of them. ... (Read 57 times)

Mr. Wonderful

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on: Jun 24, 2018
An auditor reviewing the invoices of a small company finds that there are errors in 1.5 of them.
 
  If the auditor looks at 500 invoices, what is the probability that he finds more than 3 invoices with errors? Use the Poisson approximation to the binomial distribution.

Question 2

The conditional probabilities P(A  B ) and P(B  A ) are always equal.
 
  Indicate whether the statement is true or false


SAUXC

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Reply #1 on: Jun 24, 2018
Answer to Question 1

 = nP = 7.5, then P(X > 3 ) = 1 - P(X  3 ) = 1 - (0.0006 + 0.0041 + 0.0156 + 0.0389 ) = 0.9408

Answer to Question 2

FALSE


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