Question

on u c ve " c ed con de w r er val u' dir rence bel e he wo po uation means ssum h he wo sam es are l dependent s ' 'ple andum samp es se ecled 'om norrna dis ribuled popula on so as ur旧 hal he popula on nda d deviations are cal (120 hat the standard error of the difference between mcans is oblained by pooling the sample variances A paint manufacturer wanted to compare the drying times of two diferent types of paint Independent smple random samples of 11 cais of type A and cans of type were selected and applied to similar surfaces. The drying times, in hours, were rccorded. The surnmary statistics are as follows Type A Type B 715hr x2-60.5 h' S, -34hr 2-3.6 hr 1-11 Consu ucLa 99% confidence nle val ru' μ 1-12-Un6 d ny 6renw between lhe rnean drying time fol paint type A and the mean drying Irne for painl lype B O B. . 1.51 hre μ' μ:"7.51 hr i 14 hr 700 hr

Answer 1