document.write( "Question 1004976: From previous records it was estimated that the probability that a student passes a statistics test is 0.95. A class consists of 65 students. Determine the probability that
\n" ); document.write( "i) 60 persons will pass
\n" ); document.write( "ii)at least 63 persons will pass
\n" ); document.write( "iii) at least one person will pass \n" ); document.write( "
Algebra.Com's Answer #621313 by stanbon(75887)\"\" \"About 
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From previous records it was estimated that the probability that a student passes a statistics test is 0.95. A class consists of 65 students.
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\n" ); document.write( "\n" ); document.write( "Determine the probability that
\n" ); document.write( "i) 60 persons will pass
\n" ); document.write( "P(x = 60) = 65C60(0.95)^60*(0.05)^5 = binompdf(65,0.95,60) = 0.1189
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\n" ); document.write( "ii)at least 63 persons will pass
\n" ); document.write( "P(x >= 63) = 1 - binomcdf(65,0.95,62) = 0.3630
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\n" ); document.write( "iii) at least one person will pass
\n" ); document.write( "P(x >=1) = 1 - P(x = 0) = 1 - binompdf(65,0.95,0) = 1 - (approximately zero)
\n" ); document.write( "= approximately 1
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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