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Given that S.D.() = 19000 Mean 60) = 309000 301000) D) P(xC295000) - P(x-mean) < 2950 =P (z 2-0-73) = 0.2327 (From Standard normal Eawe) ii) P (x>340000) = P (X-mean > 340000 - 3,070oo 19000 = P(Z > 1.63) = 0.0515 (from standard normal table) S.D. (0) - 27000 Mean (c) = 309000 i) P(X< 295000) = P(X- mean < 295000.00 295000 - 309000 = P(Z <-0.51) = 0.3050 (from standard normal table) ii) P(x>340000) = P(x-mean> 3 340000 -309000 27000 = P(Z >114) = 0.12712
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