Use data from a sample survey to estimate a population mean or p

_______ 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

A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.
• All teachers within the school.
• All mathematics  teachers in the school.
• All teachers except mathematics teachers.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative of all the students in the school?

• yes
• no

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

You want to know how many students catch the bus to go home.  You go to the bus stop and ask students how they go home from school.  Is this an effective sample?

• YES

• NO

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The entire group studied.

• sample
• population

Tags

CCSS.HSS.IC.A.1

The symbol for the sample proportion is __________.

• Z_c
• p̂
• E
• q

Tags

CCSS.HSS.IC.B.4

A recent study of 750 Internet users in Europe found that 35% of Internet users were women.  What is the 95% confidence interval of the true proportion of women in Europe who use the Internet? 

• 0.321 < p < 0.379
• 0.316 < p < 0.384
• 0.309 < p < 0.391
• 0.305 < p < 0.395

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.4

Which confidence would result in a wider interval (assuming nothing else changed), 91% or 97%?

• 97%, z* is larger for higher confidence intervals

• 97%, the standard error is larger for higher confidence intervals

• 91%, z* is larger for lower confidence intervals

• 91%, the standard error is smaller for lower confidence intervals

Tags

CCSS.HSS.ID.A.4

Evelyn, Avery, and Benjamin conducted a survey in their school to find out the proportion of students who prefer football over basketball and vice versa. They calculated a confidence interval for the two population proportions. Interpret this confidence interval and explain what it signifies in the context of their survey.

• The confidence interval represents the maximum value of the two population proportions.

• The confidence interval represents the average of the two population proportions.

• The confidence interval represents the range of values within which we are confident the true difference between the two population proportions lies.

• The confidence interval represents the minimum value of the two population proportions.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4