A Researcher Wants to Estimate the Difference in the Means

question 69

Multiple Choice

A researcher wants to estimate the difference in the means of two populations.A random sample of 36 items from the first population results in a sample mean of 430.A random sample of 49 items from the second population results in a sample mean of 460.The population standard deviations are 120 for the first population and 140 for the second population.From this information, a 95% confidence interval for the difference in population means is _______.

• A)-95.90 to 35.90
• B)-85.44, 25.44
• C)-76.53 to 16.53
• D)-102.83 to 42.43
• E)98.45 to 125.48

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Definitions:

Straight-Line Amortization

A method of allocating an intangible asset's cost evenly across its useful life, resulting in a consistent expense amount each period.

Theoretical Difference

Refers to the conceptual distinctions between ideas, methods, or phenomena.

Interest Expense

The cost incurred by an entity for borrowed funds, reflecting the interest payments on debt over a specific period.

Present Value

The present-day evaluation of a future financial amount or cash flow streams, using a predetermined rate of return.