Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Daytime high temperatures in New York in February are normally distributed with an average of 30.2º and a standard deviation of 8.5º.
Estimate the probability that the temperature on a given day in February is 39º or higher.
3 answers
0.23
4) The data below illustrates the movements of a portfolios annual returns over a 12-year period. (To get full points you must show all your working)
Portfolio movements, 2002-2013(%)
2002 -7.14
2003 1.62
2004 2.48
2005 -2.59
2006 9.37
2007 -0.55
2008 -0.89
2009 -9.19
2010 -5.11
2011 -0.49
2012 6.84
2013 3.04
Portfolio movements, 2002-2013(%)
2002 -7.14
2003 1.62
2004 2.48
2005 -2.59
2006 9.37
2007 -0.55
2008 -0.89
2009 -9.19
2010 -5.11
2011 -0.49
2012 6.84
2013 3.04
3 answers