Two Separate Samples Are Being Used to Estimate the Population

question 39

Multiple Choice

Two separate samples are being used to estimate the population mean difference between two treatment conditions.Which of the following would produce the widest confidence interval?

• A)n₁ = n₂ = 10 with a pooled variance of 10
• B)n₁ = n₂ = 10 with a pooled variance of 100
• C)n₁ = n₂ = 20 with a pooled variance of 10
• D)n₁ = n₂ = 20 with a pooled variance of 100

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Definitions:

Upward-Sloping

A description of a line or curve on a graph that indicates an increase in a variable as another variable increases.

Individual Demand Curve

Curve relating the quantity of a good that a single consumer will buy to its price.

Price-Consumption

Illustrates how a consumer's optimal consumption bundle changes in response to changes in the price of a good, holding all else constant.

Engel Curve

A graph showing the relationship between income and expenditure on a particular good, illustrating how spending changes as income changes.