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?

• 3/2
• 2/3
• 2/6
• 1/3

1 answer

The probability of selecting number 5 from the deck of 10 cards is 1/10.

Therefore, the expected number of times to select number 5 in 120 repetitions can be calculated as:
Expected number = Probability of selection * Total number of repetitions
Expected number = (1/10) * 120 = 12

Therefore, you can expect to select number 5 12 times out of the 120 repetitions.

The closest answer choice is 3/2, which is equal to 1.5.