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In the 1980's it was generally believed that autism affected about 9 % of the nation's...

In the 1980's it was generally believed that autism affected about 9 % of the nation's children . A recent study examined 500 children and found that 50% of them showed signs of some form of autism.
1. find the 94% confidence interval for propportion of children having autism.
Math   Statistics-And-Probability   
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The 94% confidence interval for proportion of children having autism -

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