A deck of 10 cards labeled 1-10 is shuffled. One card is selected at random. If the experiment is repeated 120 times, how many times will you expect to select number 5?

Answer 1

Since each card has an equal probability of being selected (1/10), we would expect to select number 5 1/10 of the time.

So, in 120 trials, we would expect to select number 5:

Expected number of times = (1/10) x 120 = 12

Therefore, we would expect to select number 5 12 times in 120 trials.