document.write( "Question 970732: The number of cars arrived at toll plaza in any given hour is a random\r
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document.write( "variable represented by X. The probability distribution for X is: [5]
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document.write( " X 10 11 12 13 14
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document.write( " P(X) 0.4 0.2 0.2 0.1 0.1
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document.write( "Find the probability that in a given hours:\r
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document.write( "i) Exactly 14 cars arrives. \r
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document.write( "ii) At least 12 cars arrives. \r
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document.write( "iii) At most 11 cars arrive.
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Algebra.Com's Answer #593437 by reviewermath(1029)![]() ![]() You can put this solution on YOUR website! The number of cars arrived at toll plaza in any given hour is a random \n" ); document.write( "variable represented by X. The probability distribution for X is: [5]\r \n" ); document.write( "\n" ); document.write( "X 10 11 12 13 14 \r \n" ); document.write( "\n" ); document.write( "P(X) 0.4 0.2 0.2 0.1 0.1 \r \n" ); document.write( "\n" ); document.write( "Find the probability that in a given hours: \n" ); document.write( "i) Exactly 14 cars arrives. \n" ); document.write( "P(X = 14) = \n" ); document.write( "\n" ); document.write( "ii) At least 12 cars arrives. \n" ); document.write( "P(X ≥ 12) = P(X = 12) + P(X = 13) + P(X = 14) \n" ); document.write( " =0.2 + 0.1 + 0.1 \n" ); document.write( " = \n" ); document.write( "\n" ); document.write( "iii) At most 11 cars arrive. \n" ); document.write( "P(X ≤ 11) = 1 - P(X ≥ 12) \n" ); document.write( " = 1 - 0.4 \n" ); document.write( " = |