List and Describe the Major Threats to Internal Validity

question 31

Essay

List and describe the major threats to internal validity.

Examine American domestic policies during World War II, including the rationing system and labor movements.

Explore the role and status of women and minorities in wartime America.

Understand the military strategies and operations that defined World War II.

Assess the changes in American foreign policy and the emergence of the United States as a world leader.

---

Definitions:

Equality of Means

A statistical hypothesis test to determine whether there is a significant difference between the means of two or more groups.

Population Variances

Population variances measure the degree to which each number in a set differs from the mean of the population, showing the spread or dispersion within the set.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is true.

Chi-Squared Distribution

A probability distribution widely used in statistical hypothesis tests, particularly in tests of independence and goodness of fit.