single waiting line that feeds three telle dard deviation of waiting times at the same bank when separate waiting lines are used selected from a normally distributed population. Complete parts (a) through (d) below. X stomer Waiting Times Customer Waiting Times (in minutes) 7.8 7.4 6.8 7.3 7.2 6.3 6.2 6.9 7.4 6.8 8.4 6.4 7.9 7.6 5.3 6.4 7.1 6.8 7.7 8.3 8.9 6.7 7.5 7.6 6.8 7.8 6.1 7.4 6.3 7.5 Print 8.8 6.5 7.4 5.9 5.8 7.3 6.7 6.8 6.6 7.5 7.5 6.8 7.9 6.8 6.6 Done MacBook Air 767 7.3 38 6.8 7.5 7.3 6.8 ان ان 8.9 7.8 6.8 7.8 6.3 7.6 6.6 6.3 6.1 7.9

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