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Unit 5, Random Variable and Sampling - Coggle Diagram
Unit 5, Random Variable and Sampling
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4 Step Plan
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- Ex: To find the probability of...
- Random: Is the sample proportion random?
- Normality: Do the sample proportion pass the 10% condition?
- Normality(For Sample Means): Is Sample size ≥ 30(CLT)?
- State whether normal approximation could be applied
- Independence(for Sample Means only): Did the sample size pass the 10% condition?(Population Size > n*10)
- Draw out the bell curve(normal distribution) and label/shade what area do we need to find out
- Find out the mean and S.D. and calculate the probability using Normalcdf
- Ex: The probability of....is(result)
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