document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=715549>Question 715549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In an article appearing in Today’s Health, a writer states that a single serving of popcorn has on average 75 calories. To determine if the average number of calories in a single serving of popcorn is different from 75, a nutritionist selects a random sample of 20 servings of popcorn and computes the sample mean number of calories to be 78 with a sample standard deviation of 7.  Assume the caloric content of popcorn is normally distributed.<BR>\n" );
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document.write( "I need to compute the test value. I have looked in my book and can't find a similar problem to help me. Any help or show how to get it is greatly appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #439476 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=439476\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In an article appearing in Today’s Health, a writer states that a single serving of popcorn has on average 75 calories. <BR>\n" );
document.write( "To determine if the average number of calories in a single serving of popcorn is different from 75, a nutritionist selects a random sample of 20 servings of popcorn and computes the sample mean number of calories to be 78 with a sample standard deviation of 7. Assume the caloric content of popcorn is normally distributed.\r<BR>\n" );
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document.write( "I need to compute the test value.<BR>\n" );
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document.write( "sample mean = x-bar = 78<BR>\n" );
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document.write( "test statistic: t(78) = (78-75)/(7/sqrt(20)) = 1.9166<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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