Answers
M=120 r. 20 x < 86 X-4 Za -34 20 from standard deviation Z< -1.7 P(23-1.7) 10.0446 table A -17 =10.1359 p(805X3100) p (-2825-1) p( x2-2) = 0.02275 P( **-2) = 1-0.02275 Plu>-1) = 0.84134 Plu<t). = 1-0.04134
P(xs x) = 0.40 P ( x<z) = 0.4 using stand and curre table z = -0.253 -0.28 X zotu = -0.253 (20) + 120 = 114.940 4) p(x>x) = 0.90 Plx>2) = 0.90 -1.282 2= -1.282 - x = zotu 94.360 - 1.282 ( 201 +120 Du
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