There Are Two Major Companies That Provide SAT Test Tutoring

question 13

Essay

There are two major companies that provide SAT test tutoring for high school students.At issue is whether Company 1,which has been in business for the longer time,provides better results than Company 2,the newer company.Specifically of interest is whether the mean increase in SAT scores for students who have already taken the SAT test one time is higher for Company 1 than for Company 2.Two random samples of students are selected.The following data reflect the number of points higher (or lower)that the students scored on the SAT test after taking the tutoring.Prior to conducting the test,which compares the means,we should determine if the assumption of equal variances is supported.
Conduct the appropriate hypothesis test to determine if the assumption of equal variances is supported using a 0.10 level of significance.

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Definitions:

Substage

In microscopy, a component part of the microscope's stage that allows for adjustments, such as altering the intensity of light, to enhance the visualization of specimens.

Shutter or Diaphragm

Mechanical device in a camera that controls the duration and amount of light that reaches the film or sensor, crucial for exposure.

Ocular Lens

A lens located in the eye that focuses light rays onto the retina, enabling vision.

Stage

Has two clips that hold the specimen slide to be viewed.