STAT-2300 Quiz: Course Book Summary
Document Summary
Chapter 8: section 8. 1, distribution of the sample mean. Is the population approximately normal? yes no (cid:454) is approximately normal. Confidence level (1-a)100% parameter lies within the ci a. Sample size needed for margin of error e (round up to next integer) (cid:894)p (1- p ))/n p za/2( p (1- p ))/n: random sample, n . 05n, n(p )(1- p ) 10 p (1-p )( za/2 /e) 2 (cid:454) . / n (cid:454) ta/2/(s/ n: random sample, n . 05n, n 30 n = (za/2 s/e)2. Hypothesis test for a population proportion p hypothesis test for a population mean u. Quantitative: randomly selected sample, randomly selected sample, n is less than . 05n, n is less than . 05n, np(1-p) greater than or equal to 10, n greater than or equal to 30 or normal population. Qualitative: independent random, independent random samples or randomized experiment samples or randomized experiment, n1 and n2 are less than, n1 and n2 are less than population.
