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Recent research indicated that about 20 % of children in a certain country are deficient in...

Recent research indicated that about

20 %

of children in a certain country are deficient in vitamin D. A company that sells vitamin D supplements tests

400

elementary school children in one area of the country. Use a Normal approximation to find the probability that no more than

67

of them have vitamin D deficiency.

The probability is approximately ______

(Round to three decimal places as needed.)

0 0
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