XYZ dog-food brand on its label states to contain 30% protein per cup. The quality control department takes samples of 200 bags from each batch to test the accuracy of the claim. Based on the sample result, the quality control accepted the batch as meeting standards. However, later it was found that testing equipment itself was in need of calibration and it was overestimating the protein content. This is an example of:

Type error

Type II Error

Alpha

Level of significance