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2.4.12 Calculate probabilities from a Normal distribution (A-level only)

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Question 17

The heights of a specific species of plant are normally distributed. 20% of the plants are shorter than 15 cm. 10% of the plants are taller than 25 cm.

Find the mean and standard deviation of the heights of the plants.

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2.4.12 Calculate probabilities from a Normal distribution (A-level only) Questions

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  3. /2.4.12 Calculate probabilities from a Normal distribution (A-level only)