document.write( "Question 1048248: Hi there, I'm really stuck on this problem and could use your help!\r
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document.write( "Mimi made a random guess at 10 true-or-false questions. Let x be the number of correct answers she got. We know that x follows a binomial distribution.
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document.write( "Could you identify n (number of trials), p (probability of success) and q (probability of failure) for this binomial distribution? \r
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document.write( "In addition, what is the expected value (μ) and standard deviation (σ), respectively?\r
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document.write( "Any help on this would be greatly appreciated!
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Algebra.Com's Answer #663840 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! 10 true-or-false questions \n" ); document.write( "n = 10, p = 1/2 and q = 1/2 \n" ); document.write( "Bionomial distribution \n" ); document.write( "mean = np = 10(1/2) = 5 \n" ); document.write( "variance = npq= np(1-p) = 5/2 \n" ); document.write( "SD = sqrt variance = sqrt(5/2) \n" ); document.write( " \n" ); document.write( " |