Answer:
cost of capital 16%
Explanation:
SML formula:

r_f = 3%
β = 1.3
r_m = 13%
0.03 + 1.3(0.13-0.03)
firm's required return = .16 = 16%
Three essential <span>principles of test construction are:
1. consistency. It refers to the consistency </span><span>between the goal of the subject, course, and the methods of teaching goals. Also consistency between the methods and what the test measures. </span><span>
2. validity. Validity refers to t</span>he ability of a test to measure what it was designed to measure. It can be material od skill.
3. reliability. The <span>test must be constructed in such a way that it will produce reliable, consistent results .</span>