In the 2000 Sydney Olympics, a special program initiated by IOC president Juan Antonio Samaranch allowed developing countries to send athletes to the Olympics without the usual qualifying procedure. Here are the 71 times for the first round of the 100 meter men€™s swim (in seconds).

(a) Find the sample mean and sample standard deviation of these 100 meter swim times.

(b) Construct a dot diagram of the data.

(c) Comment on anything unusual that you see.

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60.39 49.93 53.40 51.82 50.46 51.34 50.28 50.19 52.14 50.56 52.72 50.95 49.74 49.16 52.57 52.53 52.09 52.40 49.75 54.06 53.50 50.63 51.93 51.62 52.58 53.55 51.07 49.76 49.73 50.90 59.26 49.29 52.78 112.72 49.79 49.83 52.43 51.28 52.22 49.76 49.70 52.90 50.19 54.33 62.45 51.93 52.24 52.82 50.96 48.64 51.11 50.87 52.18 54.12 50.49 49.84 52.91 52.52 50.32 51.52 52.0 52.85 52.24 49.45 51.28 49.09 58.79 49.74 49.32 50.62 49.45