A-LevelMathematicsProbability and statisticsMay/June 2025Paper 6 Q23 Marks
The height of a certain species of plant is denoted by Hcm. The heights of a random sample of 100 plants were measured, and the following results were found. • The mean, h, for the sample was 80.2. • An unbiased estimate of the population variance of H was 15.6. Calculate the value of Sh².
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