Quantitative Probability

On Julie's music playlist, she has 100 jazz songs, 70 hip-hop songs, 50 country songs, and 30 rock songs. She sets her player to choose a song at random. Based on the given information, which statement is true?

• The song is twice as likely to be hip-hop as jazz.

• The song is half as likely to be jazz as rock or country.

• The song is half as likely to be country as rock or jazz.

• The song is just as likely to be jazz as rock or hip-hop.

In a sample survey, 500 teenagers indicated that 175 of them use their computers regularly. Out of 4,500 teenagers, how many can you accurately predict will use their computer regularly?

• 1,425 Teenagers

• 1,525 Teenagers

• 1,475 Teenagers

• 1,575 Teenagers

Tags

CCSS.7.RP.A.3

The sections of a spinner are shaded red, blue, or green. Out of 24 spins, how many times will the spinner land on blue or green?

• 16

• 20

• 12

• 6

Scarlett is making a card. She has a drawer with 3 red, 2 pink, 5 green, 1 white, and 4 purple pieces of paper. How likely is it that Scarlett will randomly select a pink piece of paper?

• unikely

• as likely to happen as not

• likely

• certain

Heather has a bag of 15 red, 11 orange, 9 yellow, 12 green, 6 blue and 11 purple markers. How many times would you expect Heather to pick a red marker if she picked a marker 90 times?

• about 11 times

• about 15 times

• about 21 times

• about 64 times