Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
15th September 2017
- 1Conditional Probability3 marks
21 students study Spanish and 4 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.
- 3Bounds2 marks
A mass is 550 kg, correct to the nearest 10. Write down the upper bound.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 4x - 1, work out y when x = -4.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 54. Work out y when x = 7.
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