Lecture 25 Electromagnetic Waves-Ch 25 Wave Optics—Interference --Ch 17.
Ch. 22 2 Prop Z Test
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description
Conducting a 2-proportion z-test. State the null and alternative hypothesis, set an alpha level, check conditions to use the normal model, calculate mean and standard deviation, make a conclusion after comparing your p-value to your alpha-level.
Transcript of Ch. 22 2 Prop Z Test
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0H
HA
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Conditions
1. Randomization
2. Independence: Plausible Independence? 10% Condition -
3. np, nq ≥ 10
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p +1σ +2σ +3σ-1σ-2σ-3σ
z = P( z ) =
< > ≠
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High p-valueHigh likelihood of happening through natural sampling variation
Low p-value Low likelihood of happening through natural sampling variation
Fail to Reject the Null Hypothesis
Reject the Null Hypothesis