An article in Human Factors (June 1989) presented data on visual accommodation (a function of eye movement) when recognizing a speckle pattern on a high-resolution CRT screen. The data are as follows: 36.45, 67.90, 38.77, 42.18, 26.72, 50.77, 38.6, and 51.48. Calculate the sample mean and sample standard deviation. Round your answers to 2 decimal places. Sample mean = i Sample standard deviation = i

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