Making Inferences Math

A store manager selects 30 cartons of eggs and finds 4 cartons that 

    have cracked eggs. If the store has 105 cartons of eggs, how many 

    cartons can she expect to have cracked eggs in them?

Jon finds a box of 350 postcards. He selects a random sample of 75 postcards and finds that 27 already have a stamp on them. Predict the total number of postcards in the box with stamps on them.

• 9,450 postcards

• 126 postcards

• 13 postcards

• 5 postcards

Based on the Box Plots, which statement is correct.

• The temperatures were higher on average in St. Louis

• The temperatures varied more noticeably in Washington, D.C.

• The temperatures had a higher measure of center in Washington, D.C.

• St. Louis had the hottest recorded temperature

Based on the Box Plots, which statement is correct.

• Washington, D.C. had the hottest temperature recorded

• Washington, D.C. had the coldest temperature recorded

• The weather varied more in Washington, D.C.

• The temperatures had a higher measure of center in St. Louis

Based on the Box Plots, which statement is correct.

• The hottest temperature was recorded in St. Louis

• St. Louis had the coldest temperature recorded

• The temperatures had a higher measure of center in St. Louis

• The lowest temperature was recorded in Washington, D.C.

Based on the Box Plots, which statement is correct.

• The weather varied more in St. Louis

• The weather varied more in Washington, D.C.

• St. Louis had the hottest temperature recorded

• Washington D.C. had the coldest temperature recorded

5 red shirts

17 red shirts

40 red shirts

83 red shirts

• 5 red shirts

• 17 red shirts

• 40 red shirts

• 83 red shirts

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

• 240

• 480

• 2,400

• 4,800

As part of a 7th grade statistics project, the teacher brings a candy jar full of gumballs (red & green). The assignment is to estimate the proportion of red gumballs in the jar. Suppose one of the students draws 25 gumballs from the jar: 8 are red, 17 are green. What is the SAMPLE?

• 25 gumballs drawn

• all gumballs in the jar

• the students

• the 17 green gumballs