Daily Practice · Higher

Daily Practice - Higher

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

8th April 2011

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

1
Conditional Probability3 marks
17 students study Spanish and 6 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 ladybird population of a garden. State one assumption the method relies on.
3
Reverse Percentages3 marks
A bill is £288 including VAT at 20%. Work out the amount before VAT.
4
Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 4x - 4, work out y when x = -2.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 15. Work out y when x = 7.

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