Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
23rd April 1999
- 1Conditional Probability3 marks
18 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture2 marks
A capture-recapture estimate is made of the moth population of a meadow. State one assumption the method relies on.
- 3Standard Form2 marks
Work out (2 x 10^7) x (9 x 10^-3). Give your answer in standard form.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + x + 3, work out y when x = 1.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 4, y = 44. Work out y when x = 12.
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