Weld rejects data

An engineer wants to know whether the welding process creates more defects than it did previously. The engineer collects 80 parts and counts the number of rejected welds for each shift for a few days. Because the data have two possible outcomes, the data are binomial.

You can use this data to demonstrate Analysis of Means for binomial data.

Worksheet column Description
WeldRejects The number of rejected welds out of 80 sampled