The color red randomly appears 75% of the time and green randomly occurs 25% of

Question

The color red randomly appears 75% of the time and green randomly occurs 25% of the time. Rats, through a reward/non-reward procedure, learn to always guess red. Suppose a human guesses red 75% of the time and green 25% of the time. How well correct guess percentage) do the rat and human do? Two students tell their professor that they missed an exam because they were diving into campus together but a tire of their car blew out, The professor puts the separate rooms and asks each a simple question: Which tire blew out? Suppose the story is not true, and the students neglected to get their story straight in regard to which tire blew out. What is the probability that they will agree on which tire it was? m in two

Explanation / Answer

1)

rats = 0.75   {always red , hence 75% }
human = 0.75 * 0.75 + 0.25 * 0.25   { P(red)* P(tell red) + P(green)*P(green)}
= 0.625

2)

1/ 4 is correct

first student can pick any arbitrary tire , then probability that second picks same tire = 1/4

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