Pinterest Copy of US History D gram ( g ) ·OpenCCC: Create Act YouTube . CCCAppl

Question

Pinterest Copy of US History D gram ( g ) ·OpenCCC: Create Act YouTube . CCCApply Final Exam 17 Fnal Exam 20. Provide an appropriate response. Round to the nearest hundredth. In a certain town, 40% of adults have a college degree. If four adults from the town are selected at random, the probabilities that 0, l them will have college degrees ema der are provided in the accompanying table. Find the standard deviation for the probability distribution. x P(x) 0 0.1296 1 0.3456 2 0.3456 3 0.1536 4 0.0256 = 0.96 = 0.98 = 1.12 1.88 Subn 20 of 40

Explanation / Answer

Mean = 0*0.1296+1*0.3456+2*0.3456+3*0.1536+4*0.0256 = 1.6

Variance = 0*0.1296+1*0.3456+2*2**0.3456+3*3*0.1536+4*4*0.0256 -1.6*1.6 = 0.96

Standard deviation = SQRT(0.96) = 0.98

Option B is Correct

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