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Unformatted text preview: .9207 .9222 .9236 .9251 Area to the left of 2.71 is 0.0034 Area to the right of 1.44 is 0.9251 Area between 2.71 and 1.44 is 0.9251 – 0.0034 = 0.9217 Use a standard normal distribution table to find the area under the curve between z = –1.08 and z = 2.13. Answer: 0.8433 Probability & Std. Norm. Dist. • Let x have a normal distribution with µ = 13 and σ = 3. – Find the probability that an x value selected at random from this distribution is between 8 and 16. • P(8 ≤ x ≤16) • P(1.67 ≤ z ≤ 1) • P (z ≤ 1) – P (z ≤ 1.67) • 0.8413  0.0475 • Answer: 0.7938 Example • Find z such that 81% of the area under the standard normal curve lies between – z and z . • Answer: 1.31 Example • Find z so that 3.5% of the standard normal curve lies to the right of z . • Answer: 1.81...
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 Spring '08
 hill
 Normal Distribution, Standard Deviation, 3.5%, standard normal distribution, zscore, 81%

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