Day 1 Competition

What does DOE stand for?

• Determination of Effects

• Development of Experiments

• Design of Experiments

• Dynamic, Optimized Experiments

Tags

CCSS.HSS.IC.B.5

Which one of the following is NOT another name for the "factors" in an experiment?

• Properties

• Treatments

• The Xs

• Independent Variables

Tags

CCSS.HSS.IC.B.5

Which of the following is an example of a traditional null hypothesis?

• There is some difference between the true mean change that occur for 2 binders.

• True mean changes for binder A and binder B are equal.

Tags

CCSS.HSS.IC.B.5

If p-value < α, then one must ___ the null hypothesis.

• accept

• reject

Which of the following is NOT a benefit of replication?

• provides the means to estimate the variance of the experimental error

• demonstrates the results to be repeatable, at least under current experimental conditions

• provides protection against lurking variables.

• provides a degree of insurance against aberrant results in the experiment due to unforeseen accidents

What can you conclude about the difference in the gas price between State A versus State B based on this T-Test?

Assume alpha level of 0.05.

• Gas is more expensive in State A

• Gas is more expensive in State B

• There is no difference in gas prices between State A and B

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

What is the primary purpose of setting an alpha level (α) in hypothesis testing?

• To determine the needed sample size for the study

• To define the threshold for rejecting the null hypothesis

• To limit the risk of a Type I error

• To limit the risk of a Type II error

A chemist loads 10 batches of paint from the same materials. They want to determine if aging has an effect on viscosity. What would be the ideal statistical method to use to analyze the data?

Example data to the left.

• One-sample t-Test

• Two-Sample t-Test

• Paired t-Test

• Linear Regression

Tags

CCSS.HSS.ID.A.4