Lesson 31 QUIZ

A basketball player makes 6 out of 10 free throws. Based on her results, how many of her next 35 free throws will she NOT make?

• 4

• 7

• 14

• 21

Tags

CCSS.7.RP.A.3

There are 52 cards in a deck. Each card contains a letter or a number. Theo selects a card at random, records the letter or number, and puts the card back in the deck. The results of his first 6 trials are: 5, A, 2, 8, Q, and 9. Using Theo's results, how many number cards will he select in 24 trials?

• 10

• 12

• 14

• 16

Tags

CCSS.7.SP.C.6

Alavaro selects a colored marble at random from a bag, records the color, and replaces the marble in the bag. After 20 trials, the experimental probability of selecting a pink marble is 1/2, selecting a yellow marble is 2/5, and selecting an orange marble is 1/10. On the 21st trial, Alavaro selects a blue marble. What is the experimental probability of selecting a pink marble based on the 21 trials?

• 10/21

• 12/21

• 5/21

• 19/21

Alavaro selects a colored marble at random from a bag, records the color, and replaces the marble in the bag. After 20 trials, the experimental probability of selecting a pink marble is 1/2 selecting a yellow marble is 2/5, and selecting an orange marble is 1/10. On the 21st trial, Alavaro selects a blue marble. What is the experimental probability of selecting an orange marble based on the 21 trials?

• 10/21

• 12/21

• 2/21

• 19/21

Milo, Karthik, and Adelyn are each given a bag with an unknown number of letter tiles. Each person selects a tile at random from their bag and then puts it back. This procedure is repeated until each person has selected 45 tiles. The results of the experiment are shown in the table.

There are no tiles with the letter B in Milo's bag.

• True

• False.

Tags

CCSS.RI.7.7

CCSS.RI.8.7

CCSS.RL.6.7

CCSS.RL.7.7

CCSS.RL.8.7

Milo, Karthik, and Adelyn are each given a bag with an unknown number of letter tiles. Each person selects a tile at random from their bag and then puts it back. This procedure is repeated until each person has selected 45 tiles. The results of the experiment are shown in the table.

If Adelyn selects 9 more tiles, about 2 of them will be the letter C.

• True

• False.

Tags

CCSS.7.SP.C.6

Milo, Karthik, and Adelyn are each given a bag with an unknown number of letter tiles. Each person selects a tile at random from their bag and then puts it back. This procedure is repeated until each person has selected 45 tiles. The results of the experiment are shown in the table.

The probability of Milo selecting the letter D and the probability of Karthik selecting the letter D are the same.

• True

• False.

Tags

CCSS.7.SP.C.6

Milo, Karthik, and Adelyn are each given a bag with an unknown number of letter tiles. Each person selects a tile at random from their bag and then puts it back. This procedure is repeated until each person has selected 45 tiles. The results of the experiment are shown in the table.

The probability of Karthik selecting the letter B is 25%

• True

• False.

Tags

CCSS.7.SP.C.6

Milo, Karthik, and Adelyn are each given a bag with an unknown number of letter tiles. Each person selects a tile at random from their bag and then puts it back. This procedure is repeated until each person has selected 45 tiles. The results of the experiment are shown in the table.

The probability of Adelyn selecting an A, B, C, or D is approximately the same.

• True

• False.

Tags

CCSS.7.SP.C.6

Varsha has a multi-colored pack of pens. At the start of each class she randomly selects a blue, black, purple, or red pen from the pack and replaces it after class. The table shows the pen color she selected over the last 16 classes. Is it likely that there are equal numbers of each color pen in the pack? Explain your reasoning.

Tags

CCSS.7.SP.C.6