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Basic Probability

Basic Probability. Part 1: Mon, March 15 th. Review of Basic Probability. Formula for p = f / N Or… p = # possible ways to get outcome of interest total # possible outcomes Denominator (total # possible outcomes) also called “Sample Space” (S). (cont.).

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Basic Probability

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  1. Basic Probability Part 1: Mon, March 15th

  2. Review of Basic Probability • Formula for p = f / N Or…p = # possible ways to get outcome of interest total # possible outcomes Denominator (total # possible outcomes) also called “Sample Space” (S)

  3. (cont.) • Sampling w/replacement – each individual (outcome) is replaced into population before next selection • Sampling w/o replacement – once a person (outcome) is chosen, it is kept out of remaining population

  4. Lab 14 • Use applets to demonstrate probability concepts • Focus on sample space (all possible outcomes) • If a binomial problem (only 2 possible outcomes on each trial), can determine total # possible outcomes using 2n, where n=# trials • Shoot 3 free throws – what is samp space? Should have 23 = 8 outcomes • HHH, HHM, HMH, MHH, HMM, MHM, MMH, MMM

  5. (cont.) • Use unit normal table to determine probabilities (instead of %s) associated with different z scores • Remember z = (x – xbar) / Sx

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