The cold start ignition time of an automobile engine is being investigated by a gasoline manufacturer. The

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The “cold start ignition time” of an automobile engine is being investigated by a gasoline manufacturer. The following times (in seconds) were obtained for a test vehicle: 1.75, 1.92, 2.62, 2.35, 3.09, 3.15, 2.53, 1.91.

(a) Calculate the sample mean and sample standard deviation.

(b) Construct a box plot of the data.

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