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Use the given information to find the number of degrees of freedom, the critical values yz and yo , and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 90% confidence; n = 40, s = 65.5. X i Area to the right of the critical value Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.) Area to the Right of the Critical Value Degrees of x2 = 0 Degrees of Freedom 0.985 0.99 0.975 0.95 0.90 0.10 0.06 0.025 0.01 0.005 Freedom (Round to three decimal places as needed.) 0.001 0.004 0.016 2.706 3.841 5.024 6.635 7.879 2 0.010 0.020 0.051 0.103 0211 4.605 5.991 7.378 9.210 10.597 XR = 0 3 0.072 .115 0216 0.352 0.584 6.251 7815 9.348 11.34 12.838 (Round to three decimal places as needed.) 7.779 11.143 14.860 0.207 0.297 0.484 0.711 1.064 9.488 13.277 16.750 0.412 0.554 0.831 1.145 1.610 9.236 11.071 12.833 15.086 The confidence interval estimate of o is