Introduction to Statistics Evaluating Expressions and Solving Equations Name: Score: Instructions 1. Show all your work. 2. All answers should be in decimal form. 3. Round to two decimal places. 1. Evaluate the expression 2 when Ex = 42 and n = 5. 42 8.40 Vni 2. Evaluate the expression $1 + 2 when r1 = 4, n1 = 12, x2 = 5 and n2 = 21. 21 + 2 VnI 12 Viz ty V0.5714... ~ 0.76 3. Evaluate the expression PC-P when p = 0.31 and n = 27. p(1-p) n 0.31(1-0.31) 27 0.31(0.69) 27 0.2139 27 V0.0079... ~ 0.09