Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

31st December 1999

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
20 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the snail population of a hedgerow. State one assumption the method relies on.
3
Bounds2 marks
A mass is 420 kg, correct to the nearest 10. Write down the lower bound.
4
Solving Quadratics3 marks
Solve x^2 - 12x + 27 = 0.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 4. Work out y when x = 15.

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