document.write( "Question 369109: The theoretical probability of undesirable side effects resulting from taking Grebex is 1 in 20. If 100 people take Grebex to lower their blood pressure, how many will encounter undesirable side effects? \n" ); document.write( "

Algebra.Com's Answer #263024 by neatmath(302) $\"\"$ $\"About$

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This is a good example of using the Binomial Probability Distribution, because for each member of the sample, there can only be two outcomes.
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\n" ); document.write( "\n" ); document.write( "In other words, for each person, they will either have undesirable side effects, or they will not!
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\n" ); document.write( "\n" ); document.write( "The expected number of people who will have undesirable side effects is given by:
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\n" ); document.write( "\n" ); document.write( "mean (or the expected value)=n*p
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\n" ); document.write( "\n" ); document.write( "where n is the sample size and p is the theoretical underlying probability
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\n" ); document.write( "\n" ); document.write( "so, we have
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\n" ); document.write( "\n" ); document.write( "mean=100*(1/20)
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\n" ); document.write( "\n" ); document.write( "mean=5
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\n" ); document.write( "\n" ); document.write( "So, we can expect to see 5 people out of 100 who take this drug to have undesirable side effects.
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\n" ); document.write( "\n" ); document.write( "I hope this helps!
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