An article in Human [visual ens and Disp (1989, Vol. 31(3), pp. 247?257)] presented data on visual accommodation (a functi eye movement) when recognizing a speckle pattern on a high-resolution CRT screen. data are as follows: 36.45, 67.90, 38.77, 42.18, 26.72, 50.77, 39.30, and 49.71. Calculat sample mean and sample standard deviation Construct a dot diagram of the data

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