Given the data

8.8 9.59.8 9.410.0

9.410.19.211.3 9.4

10.010.47.910.4 9.8

9.8 9.58.9 8.810.6

10.1 9.59.610.2 8.9

Determine

(a) The mean,

(b) The standard deviation,

(c) The variance,

(d) The coefficient of variation, and

(e) The 95% confidence interval for the mean.

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