You are here (click or tap to change) Back to Chapter 9 Main Page
Problem 4
9.1 Z-Interval to Compare Two Population Means: Independent Samples
A large sample confidence interval for the true average difference between quantitative GRE scores for engineering majors and physical science majors was created. The result was as follows:-45.09 < μe - μp < 95.09. Is there a significant difference? Which group had the larger sample mean?