A pond near your home contains many different fish. You want to know the average

Question

A pond near your home contains many different fish. You want to know the average length of the fish and randomly collect 30 of them to measure their length and then release them back into the water. You find the average length from your sample is 10.5 inches. Later that day, your friend informs you that he has a special net that can collect all of the fish quickly. You use his net and then find the average length of all the fish in the pond is 11.1 inches. Which of the following is correct? X bar = 10.5; mu = 11.1: N = 30 p cap = 10.5; p = 11.1; N=30 p cap = 10.5; p = 11.1; n = 30 X bar = 10.5; mu = 11.1; n=30

Explanation / Answer

N=30
Sample mean length = 10.5

Pop. mean length = 11.1inches

So, the notation matters here.

Xbar, Mu and n are the notations.

Hence, D is the option

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