Unit 2 Review: Normal and Uniform Distributions

• 0.8849

• 0.1151

• 0.3889

•  0.8889

• 0.1112

Tags

CCSS.HSS.ID.A.4

Using the standard normal distribution tables, what is the area under the standard normal curve corresponding to $-0.5<z<1.2$ ?

• 0.4236

• 0.8849

• 0.5764

• 0.3085

• 0.2815

Tags

CCSS.HSS.ID.A.4

A researcher is interested in determining if one can predict the score a student gets on a statistics exam from the amount of time the student spends studying for the exam. In this study, the explanatory variable is ...

• the amount of time spent studying for the exam

• the students taking the exam

• the score on the exam

• the researcher

• the fact that this is a statistics exam

Tags

CCSS.HSS.ID.C.9

Foresters use regression to predict the volume of timber in a tree using easily measured quantities such as diameter. Let y be the volume of timber in cubic feet and x be the tree's diameter in feet (measured at three feet above ground level). One set of data gives the following least-squares regression equation: $\overline{y}=–30+60x$ . The predicted volume of timber in a tree of diameter 18 inches is 

• 30 cubic feet

• 60 cubic feet

• 90 cubic feet

• 1080 cubic feet

• 1050 cubic feet

Tags

CCSS.HSF.LE.B.5

Which scenario would produce the least biased results?

• asking athletes at a gym what their favorite television show is
• asking shoppers at a store where their favorite place to shop is
• asking fans at a baseball game who their favorite baseball team is
• asking students in a college library what their favorite college sports team is

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Source of bias in which people CHOOSE to respond and usually only people with very strong opinions respond.

• Voluntary Response Bias

• Undercoverage Bias

• Leading Question Bias

• Social Desirability Bias

• Non-response Bias

Tags

CCSS.HSS.IC.B.3

A parameter is ...

• a sample characteristic

• a population characteristic

• unknown

• normally distributed

Randomly assigning treatment to experimental units allows ...

• population inference

• causal inference

• both types of inference

• neither type of inference

Tags

CCSS.HSS.IC.B.3

Observational studies allow:

• population inference

• causal inference

• both types of inference

• neither type of inference

Tags

CCSS.HSS.IC.B.3

When asked questions concerning personal hygiene, people commonly lie. This is an example of:

• sampling bias

• confounding

• non-response bias

• response bias

Tags

CCSS.HSS.IC.B.3