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Exam Questions - Confidence Intervals

variance r; . A quality control inspector uses a gauge to measure the length, x centimetres, of each rod in a random sample of 100 rods from the machine's production. The summarised data are as follows. (3 marks) (4 marks) (a) (b) (c) (d) Ex 1040.0 Ex 2 11 102.11 Calculate unbiased estimates of and (72. Construct a 99% confidence Interval for g.

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