STA 13 Study Guide - Midterm Guide: Test Statistic, Electronic Component, Central Limit Theorem
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A binomial experiment meets the following conditions. Each trial has two outcomes (success and failure) The probability of success (p) is the same in each trial. If x is the number of successes in a binomial experiment, then we say that x . Is a binomial random variable with parameters n and p. Let x be the number of heads in 10 tosses of a fair coin. Mean of x: = 10(. 05) = 5. ( 2) =( = 0) +( = 1) +( = 2) X is a random variable with the binomial(n, p) distribution. ( =) = 0for all other k. Suppose x is a random variable with the binomial(n,p) distribution. Suppose in some city 15% of the adult population are tobacco smokers. Choose 20 adult from that city at random. X is the number of smokers in the group of 20. The distribution of x is binomial(20, 0. 15)
