document.write( "Question 970732: The number of cars arrived at toll plaza in any given hour is a random\r
\n" ); document.write( "\n" ); document.write( "variable represented by X. The probability distribution for X is: [5]
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\n" ); document.write( " X 10 11 12 13 14
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\n" ); document.write( " P(X) 0.4 0.2 0.2 0.1 0.1
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\n" ); document.write( "\n" ); document.write( "Find the probability that in a given hours:\r
\n" ); document.write( "\n" ); document.write( "i) Exactly 14 cars arrives. \r
\n" ); document.write( "\n" ); document.write( "ii) At least 12 cars arrives. \r
\n" ); document.write( "\n" ); document.write( "iii) At most 11 cars arrive.
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Algebra.Com's Answer #593437 by reviewermath(1029)\"\" \"About 
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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) = \"highlight%280.1%29\"\r
\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( " =\"highlight%280.4%29\" \r
\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( " = \"highlight%280.6%29\"
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