FILE (Use Excel) The following table shows the annual returns (in percent) for Fidelity's Select Electronic and Select Utilities mutual funds. These data can also be found on the text website, labeled Electronic and Utilities. PG-69

a. Set up the hypotheses to test the claim that the mean return for the Electronic mutual fund differs from the mean return for the Utilities mutual fund.

b. Using the appropriate commands in Excel, find the value of the test statistic. What is the p -value?

c. At the 5% significance level, do the mean returns differ?

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Year Electronic Utilities 2001 -14.23 -21.89 2002 -50.54 -30.40 2003 71.89 26.42 2004 -9.81 24.22 2005 15.75 9.36 2006 0.30 30.08 2007 4.67 18.13 2008 -49.87 -36.00 2009 84.99 14.39