Variance of the number of fish


The number of a rare fish caught per trawl is known to have a Poisson distribution with mean equal to 1.5 fish.

What is the variance of the number of fish caught per trawl?

What is the variance of the average number of fish caught per trawl in 30 trawls?

What is the approximate distribution of the average number of fish caught per trawl in 30 trawls?

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Basic Statistics: Variance of the number of fish
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