Find a 95 Percent Confidence Interval for μ₁ − μ₂

question 103

Short Answer

Find a 95 percent confidence interval for μ₁ − μ₂, where n₁ = 9, n₂ = 6, ₁ = 64, ₂ = 59,
s₁² = 6, and s₂² = 3. (Assume equal population variances.)

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Definitions:

Silicate Minerals

These are minerals composed of silicate groups, which are silicons and oxygens combined in various ratios, forming the largest and most important class of rock-forming minerals.

Silicate Minerals

Minerals that contain silicon and oxygen, and possibly other elements, forming the largest and most important class of rock-forming minerals.

Earth's Crust

The outermost layer of Earth, comprising both continental and oceanic crust, and forming the solid surface of the planet.

Earth's Mantle

The thick layer of rock between the Earth's crust and core, making up about 84% of Earth's volume.