We Are Interested in Determining Whether or Not the Variances

question 14

Essay

We are interested in determining whether or not the variances of the sales at two small grocery stores are equal. A sample of 16 days of sales at each store indicated the following: $\begin{array} { l l } \text { Store A } & \text { Store B } \\n _ { 1 } = 16 & n _ { 2 } = 16 \\s _ { 1 } = \$ 125 & s _ { 2 } = \$ 105\end{array}$ Are the variances of the populations (from which these samples came) equal?
Use α = .05.

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Definitions:

Photosynthesis

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, typically from the sun, into chemical energy stored in glucose, using carbon dioxide and water.

Protocells

Simple, primitive cells believed to be the precursors to modern cells, consisting of a lipid bilayer membrane enclosing basic molecular components.

Lipid Membrane

A bi-layer structure forming the outer boundary of cells, composed mainly of lipids and proteins.

Aerobic Bacteria

Bacteria that require oxygen for their growth and survival, playing crucial roles in various biological processes including the decomposition of organic material.