7th Review Experimental Probabilities

The table shows the blood types of the last 300 people to donate blood at a blood bank. What is the experimental probability that the next person to donate blood will have type O blood?

• 144/300

• 93/300

• 40/300

• 14/300

At a dentist office on Monday, there were 122 visitors. 72 of those visitors were children. Tomorrow, there are 92 visitors in total. About how many of those visitors' will be children tomorrow?

• about 54 will be children

• about 59 will be children

• about 25 will be children

• about 42 will be children

At a basketball game, Giannis scored 14 of his 17 shots. If Giannis shoots 45 times, about how many baskets can we predict he will make? Use proportional reasoning to make this prediction.

• about 37 baskets

• about 40 baskets

• about 82 baskets

• about 29 baskets

Select all the possible ways to use experimental probability to make predictions.

• Using percents

• Making proportions

• Writing an algebraic expression

• Using a random number genterator

If 50 people donate blood on Friday, how many can be expected to have type O blood? Use proportional reasoning to make this prediction based off the data in the table.

• 24 people

• 48 people

• 25 people

• 19 people

Walker plays Fortnite 3 days a week after school. Yesterday he played 20 games and his team won 14 of them. If he plans to stay up on Friday and play 70 games, how many games can he expect to win?

• 51 games

• 49 games

• 70 games

• 60 games

Alyssa worked at a hockey tournament this weekend in the concession stand. 2 out of every 8 people bought a hot chocolate. If there are 256 people at the rink, how many hot chocolates can Alyssa expect to serve?

• 64 hot chocolates

• 25 hot chocolates

• 192 hot chocolates

• 128 hot chocolates

Jessa was tossing a ball up in the air and catching it. He found that in 50 tries, he could catch it 45 times. He is going to do this 600 more times. Predict how many times Jessa will catch the ball out of these 600 tosses.

• 540 times

• 450 times

• 595 times

• 550 times

The experimental probability that Teresa will make a free throw shot in basketball is 50%. Which is the best simulation that can be used to estimate the probability that Teresa will make her next two free throws?

• Flip a cup

• Flip a coin

• Pick an ace from a deck of cards

• Roll a 1 or 2 on a number cube

A bag holds 6 plain bagels, 3 raisin bagels, 2 chedda bagels and 1 onion bagel. Grace chooses 4 bagels from the bag at random. Select all the possible compound events that Grace could pick

• All the bagels are raisin bagels

• There are exactly 2 plain bagels

• More than half of the bagels are cheddar bagels

• There are more onion bagels selected that raisin bagels

• The number of cheddar bagels is equal to the number of plain bagels.