The Complete 2025 Software Engineer Salary Guide

Salaries of entry-level computer engineers have Normal distribution with unknown mean and variance. Three randomly selected computer engineers have salaries (in 1000  s ): 30,50,70 (a) Construct a 90 % confidence interval for the average salary of an entry-level computer engineer. (b) Does this sample provide a significant evidence, at a 10 % level of significance, that the average salary of all entry-level computer engineers is different from 80,000 ? Explain. (c) Looking at this sample, one