We take a sample of 15 people with diabetes and test them


Suppose that 20% of the people with diabetes develop diabetic retinopathy.

We take a sample of 15 people with diabetes and test them for diabetic retinopathy. X ~ B(15, 0.20) x is distributed binomial with n=15 and p = 0.20.

Find the variance for this sample of 15.

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Basic Statistics: We take a sample of 15 people with diabetes and test them
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