Question: Consider the 63 automatic teller machine (ATM) transaction times given in Table 3.4. Click here for the Excel Data File (a) Construct a stem-and-leaf display,

Consider the 63 automatic teller machine (ATM) transaction times given in Table 3.4. Click here for the Excel Data File (a) Construct a stem-and-leaf display, splitting the stems, for the 63 ATM transaction times. Describe the shape of the distribution of transaction times. Stem unit Leaf unit Frequency Stem Leaf 3 2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4 3 5,5,5,5,5,5,5,6,6,6,7,7,7,7,7,8,8,9,9,9,9,9 0,0,0, 1, 1, 1,2,2,2,3,4 63 Distribution is skewed right (b) When we compute the sample mean and sample standard deviation for the transaction times, we find that x = 36.56 and s = 4.475. Compute each of the intervals [x + s], [x + 2s], and [x + 3s]. Then count the number of transaction times that actually fall into each interval and find the percentage of transaction times that actually fall into each interval. (Round your answers to 3 decimal places.) [x(bar) + s] 32.085 41.035 ]: [x(bar) + 2s] 27.610 45.510 ]: [x(bar) + 3s] 23.135 49.985 ]

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