At this weekend's soccer game, 20 out of the first 30 people who entered the field were wearing a team jersey. If this sample is representative of the 240
people attending the game, about how many of them will probably be wearing
jerseys?

160

Step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%