Statistics Formulas for Hypothesis Testing, Exams of Data Analysis & Statistical Methods

Download Statistics Formulas for Hypothesis Testing and more Exams Data Analysis & Statistical Methods in PDF only on Docsity! FORMULAS TEST 3 n x x i∑= ( ) 1 2 − − = ∑ n xx s i Sample Size For µ 2 *      = m z n σ For p *)1(* * 2 pp m z n −     = where m is margin of error Parameter Test Statistic Confidence Interval µ n x z /σ µ− = )/(* nzx σ± ns x t / µ− = )/(* nstx ± df = n-1 µ1 – µ2 21 2121 11 )( nn s xx t p + −−− = µµ 21 21 11 * nn stxx p +±− where 2 )1()1( 21 2 22 2 112 −+ −+− = nn snsn s p df = n1 + n2 - 2 p n pp pp z oo o )1( − − = ∧ n X p = ∧ n pp zp )1( * ∧∧ ∧ −± p1 – p2 )11)(1( 21 21 nn pp pp z +− − = ∧∧ ∧∧ 2 22 1 11 21 )1()1( * n pp n pp zpp ∧∧∧∧ ∧∧ −+−±− where 21 21 nn XXp + += ∧