document.write( "Question 1197492: Recent research indicated that about 30% of children in a certain country are deficient in vitamin D. A company that sells vitamin D supplements tests 310 elementary school children in one area of the country. Use a Normal approximation to find the probability that no more than 79 of them have vitamin D deficiency.
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Algebra.Com's Answer #830813 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Hi  \r\n" );
document.write( " p(deficient in vitamin D) = .30   and P(not) = .7 \r\n" );
document.write( "n = 310\r\n" );
document.write( "µ = np = 93\r\n" );
document.write( "σ =  = 8.07  rounded\r\n" );
document.write( "Using a TI calculator 0r similarly a Casio fx-115 ES plus\r\n" );
document.write( "P( x  ≤ 79) = .0414 app \r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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