document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=918876>Question 918876</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.	A pharmaceutical company is investigating the relationship between advertising expenditures and the sales of some over-the-counter (OTC) drugs wherein it is believed that the sales are dependent on how rigorous advertising was/is. The following data represents a sample of 10 common OTC drugs.\r<BR>\n" );
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document.write( "Note that Advertising and sales are measured in millions of Pula.\r<BR>\n" );
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document.write( "Advertising	Sales<BR>\n" );
document.write( "22	64<BR>\n" );
document.write( "25	74<BR>\n" );
document.write( "29	82<BR>\n" );
document.write( "35	90<BR>\n" );
document.write( "38	100<BR>\n" );
document.write( "42	120<BR>\n" );
document.write( "46	120<BR>\n" );
document.write( "52	142<BR>\n" );
document.write( "65	180<BR>\n" );
document.write( "88	230\r<BR>\n" );
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document.write( "1.	Explain the strength of relationship between the observed variables (3)<BR>\n" );
document.write( "2.	What would be the value of sales when there are no advertising expenditure (2)<BR>\n" );
document.write( "3.	Use the line of best fit to predict the Sales if Advertising dollars = P50 million (4)<BR>\n" );
document.write( "4.	Calculate the slope and explain what it means in the words of the problem (3)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #557333 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=557333\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using scatter plot function Excel<BR>\n" );
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document.write( "1. Explain the strength of relationship between the observed variables (3) R^2 = .9927 Strong relationship<BR>\n" );
document.write( " 2. What would be the value of sales when there are no advertising expenditure (2) $6.629M<BR>\n" );
document.write( " 3. Use the line of best fit to predict the Sales if Advertising dollars = P50 million (4) y = 2.5695(50) + 6.629<BR>\n" );
document.write( " 4. Calculate the slope and explain what it means in the words of the problem (3) m ~ 2.6 Increaed Advertising Increases Sales </SPAN>\n" );
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