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<p><span style="font-size: medium;"><strong>Gas Prices: New England</strong></span></p> <p><span style="font-size: medium;">During a certain week the mean price of gasoline in the New England region was $2.818 per gallon. A random sample of 32 gass stations is drawn from this population. What is the probability that the mean price for the sample was between $2.768 and $2.918 that week? Assume «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»§#963;«/mi»«mo»=«/mo»«/math»$0.045.</span></p> <p><span style="font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»P«/mi»«mfenced»«mrow»«mo»$«/mo»«mn»2«/mn»«mo».«/mo»«mn»768«/mn»«mo»§lt;«/mo»«mover»«mi»x«/mi»«mo»§#175;«/mo»«/mover»«mo»§lt;«/mo»«mn»2«/mn»«mo».«/mo»«mn»918«/mn»«/mrow»«/mfenced»«mo»=«/mo»«/math» {1:NM:=1}<br /></span></p>
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Tuesday, 5 November 2013, 10:15 AM
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