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Unformatted text preview:  Mean, Median and mode all equal  Mean = 0, σ 2 = 1, σ = 1 THE NORMAL CURVE Area under curve probabilityZ is continuous so can only computer probability for a range of values THE (STANDARD) NORMAL CURVE • BASIC RULES TO REMEMBER: THE (STANDARD) NORMAL CURVE • BASIC RULES TO REMEMBER: • 50% above Z=0, 50% below Z = 0 • 34% between Z=0 and Z= 1, • or between Z=0 and Z = 1 • 68% between Z = 1 and Z = +1 • 96% between Z = 2 and Z = +2 • 99% between Z = 3 and Z = +3 THE (STANDARD) NORMAL CURVE TWOTAILED CRITICAL VALUES 5% + and 1.96 1% + and – 2.58 THE NORMAL CURVE ONETAILED CRITICAL VALUES 5% + OR  1.645 1% + OR – 2.33...
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 Spring '10
 SHAMS
 Normal Distribution, Standard Deviation, standard normal curve, Quick Review

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