document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1205907>Question 1205907</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Flaws in plate glass used for large office buildings occur randomly at an average of 1 per 10 square feet.\r<BR>\n" );
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document.write( "PLEASE USE 4 DECIMAL PLACES IN THE ANSWERS.<BR>\n" );
document.write( "Question content area bottom<BR>\n" );
document.write( "Part 1<BR>\n" );
document.write( "​a)  What is the probability that a 6 ft. by 10 ft. sheet of this type of glass will contain less than 2​ flaws?<BR>\n" );
document.write( "The probability that a 6 ft. by 10 ft. sheet of this type of glass will contain less than 2 flaws is  <BR>\n" );
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document.write( "enter your response here.<BR>\n" );
document.write( "​b)  What is the probability that a 6 ft. by 10 ft. sheet of this type of glass will contain at least 1​ flaw?<BR>\n" );
document.write( "The probability that a 6 ft. by 10 ft. sheet of this type of glass will contain at least 1 flaw is <BR>\n" );
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document.write( "enter your response here.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843352 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=843352\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> average number of flaws is 1 every 10 square feet.<BR>\n" );
document.write( "if 60 square foot panel, then the average number of flaws is 6.<BR>\n" );
document.write( "assuming a proportion type problem, then:<BR>\n" );
document.write( "n = 60<BR>\n" );
document.write( "p = .1<BR>\n" );
document.write( "q = 1-p = .9<BR>\n" );
document.write( "np = 60 * .1 = 6<BR>\n" );
document.write( "s = sqrt(n*p*q) = sqrt(5.4) = 2.3238 rounded to 4 decimal places.<BR>\n" );
document.write( "if average number of flaws is 2, then:<BR>\n" );
document.write( "z = (2-6)/2.3238 = -1.72 rounded to 2 decimal places.<BR>\n" );
document.write( "probability of getting a z-score less than that is .0427 rounded to 4 decimal places.<BR>\n" );
document.write( "if average number of flaws is 1, then z = (1-6)/2.3238 = -2.15 rounded to 2 decimal places.<BR>\n" );
document.write( "probability of getting a z-score greater than or equal to that is .9842 rounded to 4 decimal places.\r<BR>\n" );
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document.write( "these are ball park figures.<BR>\n" );
document.write( "the actual value may not necessarily be exactly what they are, but they should be close.<BR>\n" );
document.write( "best i can do based on what i know.<BR>\n" );
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