What is the probability that exactly one has an error

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The Internal Revenue Service estimates that 7% of all taxpayers filling out forms make mistakes.

An IRS employee randomly selects and checks 10 forms for mistakes. What is the probability that exactly one has an error?

Round answer to 4 decimal places

The same IRS employee announces at lunch one day that she is going to check 25 randomly selected forms after lunch. Calculate the mean number of mistakes she should expect to find, and show all of your work leading up to your answer.

What is the probability that there are zero mistakes in 25 randomly selected forms?

If a worker finds 0 mistakes, does this provide convincing evidence to cause her supervisor to believe that she is missing mistakes? Explain.

Reference no: EM132846679

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