Mathematics, 13.07.2020 23:01 biggasi

The table shows the probabilities of people in Wales being in blood group O or in blood group A or in blood group AB. All people in Wales are in exactly one of the blood groups O, A, B or AB. There are 1200 students in Aled’s school. Aled’s school is in Wales. Work out an estimate for the number of pupils in Aled’s school who are in blood group AB.

The table shows the probabilities of people in Wales being in blood group O or in blood group A or

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