Question: Question 3 [15] In 16 test runs, the fuel consumption of an experimental engine had a sample mean of 20 litres and a sample

Question 3 [15] In 16 test runs, the fuel consumption of an

Question 3 [15] In 16 test runs, the fuel consumption of an experimental engine had a sample mean of 20 litres and a sample standard deviation of 2.2 litres. Required: a) Construct and interpret a 90% confidence interval for the population variance of the fuel consumption of the engine. (15)

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