01:960:401 Study Guide - Midterm Guide: Qnx, Sampling Error, Exponential Distribution

• School: Rutgers University
• Department: Statistics and Biostatistic
• Course: 01:960:401
• Professor: S Lawrence

Document Summary

Ex f (x) f(x) x x ( 2 x. 2 = 1 pq (x) x! (n x)! (x) = 2 = n q = 1 p n! = e ariance v ds = = npq. P t=size of segment of interest x=number successes in segment. =expected number of successes in segment of unit size. Normal: bell shaped, symmetrical; mean (0), median and mode are equal. = x = ( x n! x! (n x)! f(x) 68. 26% all observations lie within one standard deviation to either side of mean, . End points p z n p(1 p) a=0. 05=90%=1. 645. You find this by dividing a by 2. a=. 10, a/2=0. 05. Determining sample size n = ( e z 2 a, do not reject ho (population proportion) Level of significance determines the reject region ( N number successes in sample sample size x =