document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1198512>Question 1198512</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An increasing number of consumers believe they have to look out for themselves in the marketplace. According to a survey conducted by the Yankelovich Partners for USA WEEKEND magazine, 60% of all consumers have called an 800 or 900 telephone number for information about some product. Suppose a random sample of 20 consumers is contacted and interviewed about their buying habits.\r<BR>\n" );
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document.write( "a. What is the probability that 15 or more of these consumers have called an 800 or 900 telephone number for information about some product?\r<BR>\n" );
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document.write( "b. What is the probability that more than 20 of these consumers have called an 800 or 900 telephone number for information about some product?\r<BR>\n" );
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document.write( "c. What is the probability that fewer than 10 of these consumers have called an 800 or 900 telephone number for information about some product? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #832126 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52797)</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=832126\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "An increasing number of consumers believe they have to look out for themselves in the marketplace. <BR>\n" );
document.write( "According to a survey conducted by the Yankelovich Partners for USA WEEKEND magazine, <BR>\n" );
document.write( "60% of all consumers have called an 800 or 900 telephone number for information about some product. <BR>\n" );
document.write( "Suppose a random sample of 20 consumers is contacted and interviewed about their buying habits.<BR>\n" );
document.write( "a. What is the probability that 15 or more of these consumers have called an 800 or 900 telephone number <BR>\n" );
document.write( "for information about some product?<BR>\n" );
document.write( "b. What is the probability that more than 20 of these consumers have called an 800 or 900 telephone number <BR>\n" );
document.write( "for information about some product?<BR>\n" );
document.write( "c. What is the probability that fewer than 10 of these consumers have called an 800 or 900 telephone number <BR>\n" );
document.write( "for information about some product?<BR>\n" );
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document.write( "Typical binomial distribution problems, packed three in one post.\r<BR>\n" );
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document.write( "Use free of charge online calculator https://stattrek.com/online-calculator/binomial.aspx<BR>\n" );
document.write( "similar to that I used it in my previous post.\r<BR>\n" );
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document.write( "It provides nice instructions and a convenient input and output for all relevant options/cases.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );