A group of occupational health researchers have just completed a novel computer-based, interactive safety-training program for migrant workers. They want to compare the efficacy of their new interactive program against the industry's standard, a traditional VHS video on workplace safety. A major fruit producer has agreed to allow them to conduct a study using their migrant workers. A total of 87 workers used the new, interactive training program while a control group of 104 used the traditional video. A year later, the first group reported an average of 2.7 injuries per person while the control group reported on average 3.5 yearly injuries per person. The pooled standard deviation for these two groups was 0.45.These researchers want to know if their new computer training protocol resulted in fewer agricultural injuries that year.

Solve and select the correct answer.

Group of answer choices

1.78, one-tail test, p<.05

1.78, one-tail test, p>.05

1.98, two-tail test, p<.05

1.98, one-tail test, p>.05