The tables shows that the relative frequencies for each number are very similar 0.19, 0.20 and 0.21.
That drives to tell that the outcomes appear to be equally like.
That means that the probabilities are uniform, so the answer is:
<span>The
outcomes appear to be equally likely, so a uniform probability model is
a good model to repersent the probabilities in Tyra's experiment.</span>
0.2 + 0.3 + 0.5 = 1
190 x 0.2/1 = 38
190 x 0.3/1 = 57
190 x 0.5/1 = 95
190
0.2: 0.3: 0.5
38: 57: 95
<span>It doesn't matter that she guessed correctly on the first two questions, guessing the third question correctly is independent of guessing any other question correctly. Therefore, the probability is one out of four, 1/4.</span>
