You're taking samples of size 10 from a population of 20 marbles and recording the number of blue marbles in each sample. Why isn't this a binomial situation, and why would it be almost binomial if you did the same experiment with a population of 200 marbles?

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p is not constant

Step-by-step explanation:

The sample is picked without replacement so p is not constant.

With a population of 200, p would be approximately same for all 10.

When the population is large, you can assume p is constant even if without replacement

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d

step-by-step explanation:

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .