To determine the reliability of experts who interpret lie detector tests in criminal investigations, a random sample of 280 such cases was studied. The results were Suspect’s True Status Examiner’s Decision Innocent Guilty

“Innocent” 131 15

“Guilty” 9 125 If the hypotheses are H0: suspect is innocent versus Ha: suspect is guilty, then we could estimate the probability that experts who interpret lie detector tests will make a Type II error as

(a) 15/280.

(c) 15/140.

(e) 15/146.

(b) 9/280.

(d) 9/140.