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StatisticsQ&A LibraryA certain snack vending machine dispenses the incorrect item, on average, 4.2 times every day. Assume that the number of incorrect items dispensed on any given day, X, is a Poisson random variable. What is the probability that the machine will dispense exactly 9 incorrect items tomorrow? ANSWER: (Use only the appropriate formula and/or statistical table in your textbook to answer this question. Report your answer as to 4 decimal places, using conventional rounding rules) What is the standard deviation of this probability distribution? ANSWER: (Use only the appropriate formula and/or statistical table in your textbook to answer this question. Report your answer as to 4 decimal places, using conventional rounding rules)Question

Asked Nov 1, 2019

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A certain snack vending machine dispenses the incorrect item, on average, 4.2 times every day. Assume that the number of incorrect items dispensed on any given day, *X, *is a Poisson random variable.

What is the probability that the machine will dispense exactly 9 incorrect items tomorrow? ANSWER: *(Use only the appropriate formula and/or statistical table in your textbook to answer this question. **Report your answer as to 4 decimal places, using conventional rounding rules)*

What is the standard deviation of this probability distribution? ANSWER: *(Use only the appropriate formula and/or statistical table in your textbook to answer this question. **Report your answer as to 4 decimal places, using conventional rounding rules)*

Step 1

The snack vending machine dispenses the incorrect item on average 4.2 times per day.

Thus,

Step 2

a)

The probability that the machine will dispense exactly 9...

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