document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1050288>Question 1050288</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm having a bit of trouble on this and it's giving me gray hairs!\r<BR>\n" );
document.write( "\n" );
document.write( "Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. Conduct a hypothesis test, the Type I error is:\r<BR>\n" );
document.write( "\n" );
document.write( "a. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher<BR>\n" );
document.write( "b. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same<BR>\n" );
document.write( "c. to conclude that the mean hours per week currently is 4.5, when in fact, it is higher<BR>\n" );
document.write( "d. to conclude that the mean hours per week currently is no higher than 4.5, when in fact, it is not higher\r<BR>\n" );
document.write( "\n" );
document.write( "Help 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 #666053 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=666053\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Need to Know:<BR>\n" );
document.write( "Type I Error involves the <u>rejection of a null hypothesis that is actually true</u><BR>\n" );
document.write( "Ho: &#956; = 4.5<BR>\n" );
document.write( "Ha: &#956; > 4.5<BR>\n" );
document.write( "b. to conclude that the current mean hours per week is higher than 4.5 (rejecting Ho)<BR>\n" );
document.write( "when in fact, it is the same </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );