This is a review for my upcoming test, so I need very clear instructions on how

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This is a review for my upcoming test, so I need very clear instructions on how to do this.

I can use a TI-84 to get any answer, so please include instrcutions for calculator.

Thank you for your assistnace.

Please do NOT, just give me the answer, explain what each variable is etc.

Thanks again,

8. A chemist failure osountl runs a process until it fails. Let X be the number of times the process must be run before a te occurs. Past data collection shows that X follows a Poisson distribution and that the expected number of times the process must be run before failure is 14. For the next time the process is tested, what is the probability the failure occurs after 20 or more runs of the process'? a. For the next time the process is tested, what is the probability that the number of times the chemist must run the process before a failure occurs is within one standard deviation of the expected value for X? b. Page 11

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This is a review for my upcoming test, so I need very clear instructions on how

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