# Two-Point Threshold Test Case Study

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Problem Set 7.1
a) Null Hypothesis: Within the 95% confidence interval there is no significant difference between the two-point threshold test disdances among the different areas.
Alternate Hypothesis: Within the 95% confidence interval there is a significant difference between the two-point threshold test disdances among the different areas.
b) The null hypothesis should be rejected because the p-value is 0 which is lower than 0.05, also because the conifence intervals for the back of the hand and the fingertip does not overlap to be statistically equal.

c) The upper lip had the greatest density of sensory receptors. The uppers lip has the lowest mean out of all the tested areas for the two-point threshold test. Meaning that people can distinguish
Green Square This was a negative afterimage phenomenon because I saw a blue sqare since my yellow-green opponent process cells were over worked and only my red-blue cells were working.
i)
The smallest line that could be read with my partners right eye was line 10. The visual acuity of his right eye is 20/13, this mean that he was standing twenty feet away form the chart he could see what regular people cans see at thirteen feet away.
j) The smallest line that could be read with my partners left eye was line 10. The visual acuity of his left eye is 20/13, this means that he was standing twenty feet away from the chart and could see what a regular person could see at thirteen feet away from the chart.
k) My partners vision is excellent. He could read to line ten when the normal line to read is line 8.
l) So without corrective lenses my visual acuity is 20/40 and with my corrective lenses my visual acuity is 20/20. Farsightedness and nearsightedness can be corrected with convex and concave lenses. The corrective lenses directs light to converge on the retina, allowing the lens of the eye to change shape during

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