Question-5 Jim Cramer hosts CNBC's "Mad Money" program. Mr. Cramer regularly makes suggestions about which stocks to buy and sell. How well has Mr. Cramer's picks performed over the past two years (2005 to 2007)? To answer the question a random sample of Mr. Cramer's picks was selected. The name of the stock, the buy price of the stock, the current or sold price and the percent return were recorded. a) Estimate with 95% confidence the mean return for all of Mr. Cramer's selections. b) Over the two-year period the Standard and Poor's 500 Index rose by 16%. Is there sufficient evidence to infer that Mr. Cramer's picks have done less well? Use a 5% significance level for all tests.Stock Buy Price Current P Percent Gain/Loss Skyworks Solution 6.88 5.33 -22.53 Parker Hannifin 90.06 103.51 14.93 Joy Global 44.05 52.70 19.64 Emerson Electric 38.65 46.96 21.50 Chico's 40.11 19.00 -52.63 National Oilwell 53.94 113.48 110.38 Medtronic Inc 46.53 48.10 3.37 El Paso 12.32 13.70 11.20 Kraft Foods 35.31 32.06 -9.20 Geoeye 22.00 21.00 -4.52 Exxon Mobil 76.03 74.11 -2.53 Cheniere Energy 35.98 33.75 -6.20 Sturm Ruger 10.05 18.29 81.99 Roper Industries 46.25 61.82 33.66 CBS 26.18 31.39 19.90 Enersys 14.24 18.52 30.06 Revlon 3.72 2.83 -23.92 Guess 53.95 74.85 38.74 Martha Stewart 30.55 19.03 -37.71 Kimberly Clark 60.80 69.64 14.54