Please help and explain in detail for a better understanding.

• What kind of relationship exists between employees' scores on the manual dexterity tests and their performance rating?
• Suppose a candidate scored 44 on the manual dexterity test. The regression equation predicting job performance using the manual dexterity test is 32.465 + (1.234 x Manual Dexterity Test Score). What is the candidate's predicted job performance?
• Assume that only candidates with predicted performance above 85 are to be hired. This translates to a score of at least 43 on the manual dexterity test. Assume only those with scores above 43 were hired (20 of the 30 people in this sample). Would the use of this test have led to evidence of adverse impact based on sex or race? The relevant data on the 20 people exceeding the cutoff are presented in the case study on page 226.
• Given the validity results you found, would you recommend use of this test as a selection device? If so, how would you use it?