Statistics- Problem A: The “cold start ignition time

Problem A: The “cold start ignition time” of an automobile engine is 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, sample...

Statistics- To study the average amount of debts in Canada

To study the average amount of debts in Canada, 100 Canadianswere surveyed. The amount of debt of each one wasrecorded. The sample gave an average of 28110 CAD withstandard deviation of 3500 CAD. It is believed that the actualmean value of the debt in Canada is 27500....