Mathematics, 04.03.2020 23:41 jamesmarsdel
If a random sample of 300 children is selected, let X be the number of these children who have been diagnosed with ASD. What distribution does X follow? What is the expected value and standard deviation of X?
Answers: 2
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![SD(X)=\sqrt{np(1-p)}=\sqrt{300\times \frac{X}{300}[1-\frac{X}{300}]}=\sqrt{\frac{X(300-X)}{300}}](/tpl/images/0533/9505/c6a33.png)
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If a random sample of 300 children is selected, let X be the number of these children who have been...
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