Question: The normal probability plots given in Figure 6.3 are based on samples of 88 and 75 observations. Determine whether or not the normal probability plot

The normal probability plots given in Figure 6.3 are based on samples of 88 and 75 observations. Determine whether or not the normal probability plot in

(a) Figure 6.3a supports the use of the small sample confidence interval procedure for the mean.

(b) Figure 6.3b supports the use of the small sample confidence interval procedure for the mean.

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