Psychologist is measuring learning in mice. He assumes that a mouse learns to recognize a specific object after a random number of exposures, and the number is geometrically distributed with parameter p. He exposes one of his subject mice to 3 different objects on 3 different days and records the (independent) numbers of exposures: 4, 3, and 7.
A) Based on this data, what is the maximum likelihood estimate of p?
O 0.7857
O 0.2143
O 0.2727
O 0.1765