The following data give the times (in minutes) taken by 50 studentsto complete a statistics examination that was given a maximum time of 75 minutes to finish.

41 28 45 60 53 69 70 50 63 68
37 44 42 38 74 53 66 65 52 64
26 45 66 35 43 44 39 55 64 54
38 52 58 72 67 65 43 65 68 27
64 49 71 75 45 69 56 73 53 72

a. Prepare a stem-and-leaf display for these data. Arrange the leaves for each stem in increasing order.
b. Prepare a split stem-and-leaf display for the data. Split each stem into two parts. The first part should contains the leaves 0, 1, 2, 3, and 4, and the second part should contains the leaves 5, 6, 7, 8, and 9.
c. Which display (the one in part a or the one in part b) provides a better representation of the features of the distribution? Explain why you believe this.