ACT Scores of a Sample of UTC Students Are Shown

question 60

Essay

ACT scores of a sample of UTC students are shown below.

a.Compute the mean and the variance.
b.At 95% confidence,test to determine whether or not the variance of the ACT scores of the population of UTC students is significantly more than 8.

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Definitions:

Trichromatic Theory

A theory of color vision proposing that the human eye has three types of receptors with differing sensitivities to different light wavelengths, corresponding to red, green, and blue colors.

Retinex Theory

A theory stating that the color of an object is determined by its reflectance properties in a viewing context, explaining color consistency under different lighting.

Cortex

Layers of neurons covering the brain's hemispheres, involved in higher brain functions such as sensory processing and thinking.

Ratios

Mathematical expressions that compare two numbers or quantities, indicating how many times one value contains or is contained within the other.