A researcher conducted a study to test whether machine operators who receive training are more productive. She did not reject the null. Choose the type of error that might be present in this study and the explanation below. Type Verror. The evidence does not show that machine operators who receive training are more productive. In truth, they are more productive. Type I error. The evidence shows that machine operators who receive training are more productive. In truth, they are not more productive. Type I error. The evidence shows that machine operators who receive training are more productive. In truth, they are not more productive. Type I error. The evidence does not show that machine operators who receive training are more productive. In truth, they are more productive.