document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=765989>Question 765989</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A national standard requires that public bridges over 20 feet in length must be inspected and rated every two years. The rating scale ranges from 0 (poorest rating) to 9 (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the 2020 the engineers forecast that 5% of all major bridges in that city will have ratings of 4 or below.\r<BR>\n" );
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document.write( "Use the forecast to find the probability that in a random sample of 8 major bridges in the city, at least 3 will have an inspection rating of 4 or below in 2020. <BR>\n" );
document.write( "P(x greater than or equal to 3) round to 5 decimal places: </SPAN>\n" );
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document.write( "A national standard requires that public bridges over 20 feet in length must be inspected and rated every two years. The rating scale ranges from 0 (poorest rating) to 9 (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the 2020 the engineers forecast that 5% of all major bridges in that city will have ratings of 4 or below.<BR>\n" );
document.write( "Use the forecast to find the probability that in a random sample of 8 major bridges in the city, at least 3 will have an inspection rating of 4 or below in 2020.<BR>\n" );
document.write( "P(x greater than or equal to 3) round to 5 decimal places:<BR>\n" );
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document.write( "A:<BR>\n" );
document.write( "P(X &#8805; 3) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sum%28%28matrix%282%2C1%2C8%2Cx%29%29%280.05%5Ex%29%280.95%5E%288-x%29%29%2Cx+=+3%2C8%29 ALIGN=MIDDLE  ALT=\"sum%28%28matrix%282%2C1%2C8%2Cx%29%29%280.05%5Ex%29%280.95%5E%288-x%29%29%2Cx+=+3%2C8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%280.00579%29 ALIGN=MIDDLE  ALT=\"highlight%280.00579%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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