PT3 - PSTAT 5A PRACTICE TEST 3 PSTAT 5A TEST 2 FORMULA...

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PSTAT 5A PRACTICE TEST 3 PSTAT 5A TEST 2 FORMULA SHEET (You may not need to use all these formulas) Expected Value of a Discrete Random Variable: ( 29 ( 29 = x all x xp X E Variance of a Discrete Random Variable: ( 29 ( 29 2 2 μ - = x all x p x X Var Binomial Distribution X is BIN ( n, p ) mean = np ; Variance = np (1- p ) Normal Distribution is ( , ) X N μ σ x z σ - = Sample Mean = x n Sample Standard Deviation = 2 ( ) ( 1) x x n - - IQR = Q3 - Q1 Range = Maximum – Minimum Sampling distribution of P ˆ Mean= p Standard Deviation = ( 29 1 p p n - Sampling distribution of X : Mean = μ Standard Deviation = n σ

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You are responsible for memorizing any necessary formulas for chapters 6 and 7 which do not appear on the formula sheet. Appropriate tables will be provided. Be able to justify your choice of type of distribution used to determine confidence intervals or test hypotheses, e.g., normal (Z) distribution, t n-1 distribution. For hypothesis testing: Define the parameter and random variable of interest. State the null and alternative hypotheses and identify the claim. Calculate the test statistic, p-value, state your decision with regard to the hypotheses, and state your
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PT3 - PSTAT 5A PRACTICE TEST 3 PSTAT 5A TEST 2 FORMULA...

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