Question

Two independent samples of 100 mechanists and 90 carpenters are takento estimate the difference
between the weekly wages of two categories of workers. Sample mean wage and variance of
mechanist are 345 and 196 respectively. On the other hand sample mean wage and
variance of carpenters are 340 and 204 respectively. Estimate at 95 percent confidence
interval.​

Answer 1

Explanation:

Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.