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2. Ten bars of a certain quality are tested for their diameters. The results are given below. Test the hypothesis at a 95% level

2. Ten bars of a certain quality are tested for their diameters. The results are given below. Test the hypothesis at a 95% level of confidence that the mean diameter of the bars produced by the process is 1 cm. (Critical value = 2.262 (10 marks) Diameter 1.02 0.98 0.97 1.01 0.94 0.98 1.00 1.03 0.92 1.02

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