Question 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?(1 point) Responses 1120 Start Fraction 1 over 120 End Fraction 12 12 10 10 110 Start Fraction 1 over 10 End Fraction Skip to navigation

1 answer

To find the expected number of times you will select the number 5 when you repeat the experiment of drawing a card from a shuffled deck of 10 cards (labeled 1–10) a total of 120 times, you can use the concept of expected value.

The probability of drawing the card labeled "5" in a single draw is \( \frac{1}{10} \) (since there is 1 card with the number 5 out of 10 total cards).

Now, if you conduct the draw 120 times, the expected number of times you select the number 5 can be calculated as follows:

\[ \text{Expected number of times to select number 5} = \text{Total draws} \times \text{Probability of selecting 5} \] \[ = 120 \times \frac{1}{10} = 12 \]

So, the expected number of times you would select the number 5 when you repeat the experiment 120 times is 12.