Samples and Margin of Error

Convert 1.2% in decimal.

Mathematical Equivalence

ON

Of the 192 seniors of WRH, 103 will attend the prom night. What proportion of seniors will attend the prom night? (a)  

• 5.63%
• 53.6%
• 50.3%
• 0.54%

Determine whether the action would increase or decrease the margin of error: (a)  

• Margin of error increases
• Margin of error decreases

4010 people were surveyed concerning their thoughts on the upcoming election. What was the margin of error?

Tags

CCSS.HSS.IC.B.4

CCSS.HSS.IC.A.1

A research team surveys 1001 adults, asking them how many hours they work per week. What is the margin of error for this survey?

• 3%

• 32%

• 63%

• 9%

Tags

CCSS.HSS.IC.B.4

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

• 89% - 91%

• 87% - 89%

• 87% - 91%

• 388 - 402

Tags

CCSS.HSS.IC.B.4

CCSS.HSS.IC.A.1

A representative for Macy's walks around the mall interviewing people about their brand perception of Macy's. What kind of sample is this?

• Convenience sample

• random sample

• voluntary response sample

• weighted sample

A recent survey found that 77% of high schoolers use their phones more than 4 hours a day on average. The margin of error was 3%. What is the interval for which we could expect to find the truth of the population?

• 77% - 80%

• 74% - 77%

• 74% - 80%

• 50 million high schoolers - 120 million

Tags

CCSS.HSS.IC.B.4

CCSS.HSS.IC.A.1

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

_______ is the entire group of objects or individuals considered for a survey.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2