The sample space for tossing a coin 4 times is {HHHH, HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT, THHH, THHT, THTH, THTT, TTHH, TTHT, TTTH, TTTT}.
Determine P(3 tails).
8.5%
25%
31.25%
63.75%
To determine the probability of getting 3 tails when tossing a coin 4 times, we need to count the number of outcomes that have exactly 3 tails.
From the sample space above, we can see that there are 4 outcomes that have 3 tails: TTHH, THTH, HTTH, and HTHT.
Therefore, the probability of getting 3 tails is P(3 tails) = (Number of outcomes with 3 tails)/(Total number of outcomes) = 4/16 = 1/4 = 25%
So, the correct answer is 25%.