Acc Unit 4 Review Probability and Statistics

According to a random telephone survey of 200 adults, 75% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• 200 adults
• adults in the U.S.
• 75% of adults

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A principal randomly chooses 40 students from grade 5. Of these students, 9 were wearing watches. Based on this information, what is the most reasonable prediction of the number of students wearing watches in a group of 120 students?

• 27

• 9

• 18

• 80

Drake made 14 out of 20 free throw shots.  About how many out of the next 30 free throw shots would you expect him to make?

• 20
• 21
• 22
• 25

A poll was taken of Hobby Middle School, 25 out of 30 students said they would prefer pizza on Friday’s. Out of 1200 students, what is a reasonable prediction of how many students would prefer pizza on Fridays?

• 100

• 1000

• 10

• 1

What is the range in gas mileage for SUVs?

• 2
• 3
• 4
• 6

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Which car club attends more car shows?

• Cruisers
• Car Hops

Tags

CCSS.7.SP.A.1

CCSS.7.SP.B.3

CCSS.7.SP.B.4

Which car club has the higher median?

• Cruisers
• Car Hops

What is the range of the data shown in the stem and leaf plot?

• 40
• 56
• 136
• 96

Variability:

If I asked all 12 year olds in our school their shoe size, what would my data look like?

• low variability

• high variability

• no variability

• not enough information