Unformatted text preview: 3. a) 50%, b) 16%, c) 98%, d) 84%, e) 50%, f) 84%, g) 2%, h) 16%. 4. a) 340: z = 340300/20 = 2 b) 310: z = 310300/20 = 0.5 c) 260: z = 260300/20 = 2 d) 2.4: x = 2.4(20) + 300 = 348 e) 1.5: x = 1.5(20) +300 = 330 f) 0: x = 0(20) + 300 = 300 g)4.5: x = 4.5(20) + 300 + 210 5. a) The top 10% means 90% are below. Of this 90%, 50 % are below the mean. Thus, the top 10% is the point where 40% of scores are between it and the mean. Looking this up in the normal curve table, 40.00 (the closest actual value is 39.97) is a Z score of 1.28. b) 2.33...
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This note was uploaded on 04/29/2010 for the course PSYCH 315 taught by Professor Afroditipanagopoulos during the Winter '10 term at Concordia Canada.
 Winter '10
 AfroditiPanagopoulos

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