What is the sample proportion of the ROAs of the 37 companies that are negative in 2011?

Please use the sample means and variances of the above six financial variables in 2011 as an estimate of the population means and variances of the year 2012, and answer the following question:

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Debt-to-asset (%) Dividend per share Current ratio Fixed asset turnover ROA P/B 130.4 2.16 -5.36 0.92 9.8 -1.4 0.91 1.08 1.24 1.03 14.43 1.17 0.17 3.18 60.35 78.74 24.3 45.53 22.58 13.27 53.93 28.8 53.05 35.8 17.58 17.69 54.66 63.65 19.89 34.34 46.59 24.21 33.55 40.79 35.49 39.01 37.82 51.42 0.32 22.85 45.63 57.04 0 0 5.73 10.08 0 5.44 5.99 12.1 0 4.4 1.07 8.16 0 5.06 7.6 1.01 4.37 1.5 2.29 7.96 7.35 0 3.1 5.52 3.42 5.49 3.4 4.69 87.75 36.76 151.46 171.58 174.97 137.16 150.26 125.28 215.22 394.77 438.73 220.43 129.16 419.59 122.9 39.16 373.75 253.04 176.64 218.21 164.8 209.99 157.65 151.9 54.93 155.36 135.61 13.8 0.91 12.08 0.29 3.08 1.04 9.33 0.48 1.06 0.47 10.75 9.52 9.87 6.83 2.02 5.42 27.38 0 0.47 4.23 5.36 2.55 1.05 0.02 0.85 2.78 2.19 0.22 1.56 1.06 1.17 1.45 0.72 4.5 4.82 3.71 2.47 4.52 1.47 -9.68 1.88 7.41 6.5 -1.31 0.77 1.23 0.65 4.04 6.24 -1.62 0.83 2.85 1.88 4.67 2.24 2.23 1.06 0.26 0.84 2.57 0.94 0.73 1.49 0.59 0.89 2.69 2.13 1.12 0.94 2.11 1.84