(See Problem 12.6.23.) The LAPD plans to hire a psychic to assist them with their homicide...

(See Problem 12.6.23.) The LAPD plans to hire a psychic to assist them with their homicide investigations. They will test all applicants using a collection of photographs of 12 LA

citizens, 6 of whom are convicted murderers, while the other 6 have no criminal records.

Applicants are shown the back (blank) side of each picture and asked to classify each

as a murderer (M) or a non-murderer (N). Applicant Claire Voyant’s results seem quite

impressive:

Claire’s guess: M Claire’s guess: N Total

True status: M 5 1 6

True Status: N 1 5 6

Total: 6 6 12

Use Fisher’s exact test to examine H0: “Claire’s result was obtained by random guessing.” Calculate the p-value associated with the outcome X = 5, where X is the number of

murderers she correctly classified. Should H0 be rejected against a one-sided alternative at