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Edwin is able to see normally in low-light conditions and demonstrates a normal ability to detect movements in his periphery. However, he has great difficulty recognizing different colors. He sees the world mostly in shades of gray. Which of the following structures are either impaired or not present in Edwin's eyes?
Mean
The arithmetic average of a set of numbers, calculated by summing all the numbers and then dividing by the count of those numbers.
Standard Deviation
Standard deviation is a measure that quantifies the amount of variation or dispersion of a set of data values from their mean.
Standard Normal Random Variable
A normally distributed random variable characterized by a mean of 0 and a standard deviation of 1.
P
A probability value that reflects the likelihood of obtaining test results at least as extreme as the results actually observed, during the assumption that the null hypothesis is correct.
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