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A new drug cures 70 ​% of the patients to whom it is administered. It is...

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Statistics

A new drug cures 70 ​% of the patients to whom it isadministered. It is given to 28 patients. Find the probabilitiesthat among these​ patients, the following results occur. Use thenormal distribution approximation to the binomial distribution.

​(a) Exactly 22 are cured.

​(b) All are cured.

​(c) No one is cured.

​(d)14 or fewer are cured.

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