document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1178715>Question 1178715</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each problem.<BR>\n" );
document.write( "1. Your monthly electric bill has a mean of ₱120.00. what is the percentage that you will pay an amount between ₱1,380 and ₱1,740?\r<BR>\n" );
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document.write( "2.Suppose the scores in the mathematics exam are normally distributed. If the exam has a mean score of 25 and a standard deviation of 5,what is the probability that if you take the exam you will get a score higher than 30 points? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #850312 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=850312\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Solve each problem.<BR>\n" );
document.write( "1. Your monthly electric bill has a mean of ₱120.00. what is the percentage that you will pay an amount between ₱1,380 and ₱1,740?\r<BR>\n" );
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document.write( "2.Suppose the scores in the mathematics exam are normally distributed. <BR>\n" );
document.write( "If the exam has a mean score of 25 and a standard deviation of 5, <BR>\n" );
document.write( "what is the probability that if you take the exam you will get a score higher than 30 points?<BR>\n" );
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document.write( "(1) Problem in (1) is posed incorrectly/inaccurately: the standard deviation value is missed.\r<BR>\n" );
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document.write( "(2) Problem (2) in post by @CPhill is solved <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28highlight%28incorrectly%29%29 ALIGN=MIDDLE  ALT=\"highlight%28highlight%28incorrectly%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "If the score is higher than 30, it means that it is 31 or more.\r\n" );
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document.write( "So, we should calculate P(X >= 31).\r\n" );
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document.write( "It is  0.1151.   <U>the  CORRECT  ANSWER</U>\r\n" );
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document.write( "For fast calculations, I used free of charge solver at this site\r\n" );
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document.write( "https://onlinestatbook.com/2/calculators/normal_dist.html\r\n" );
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document.write( " </SPAN>\n" );
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