Eastern States Bank and Trust monitors its drive-thru service times electronically to ensure that its speed of service is meeting the company€™s goals. A sample of 28 drive-thru times was recently taken and is shown here.

a. Compute the mean, median, and mode for these sample data.
b. Indicate whether the data are symmetrical or skewed.
c. Construct a box and whisker plot for the sample data. Does the box and whisker plot support your conclusions in part b concerning the symmetry or skewness of these data?

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Speed of Service (time in seconds) 83 130 90 178 138 79 85 76 146 134 110 145 156 68 73 147 156 93 119 103 71 74 116 181 162 105