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There are on average 12.0 small airplane crashes in the US each year. What is the...

There are on average 12.0 small airplane crashes in the US each year.

What is the standard deviation of the number of small airplane crashes that will happen in the US in the next 3 years?

What is the probability that there will be exactly 10 small airplane crashes in the US in 2021?

We will find the probability that there will be fewer than 14 small airplane crashes in the US in 2021, using normal approximation. In the process, we will need to use a table or app to find P(Z ≤ z) for Z standard normal, and letting z be what?

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