Daily Practice

Higher

30th June 1978

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

1
Probability Trees3 marks
4 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the beetle population of a woodland. State one assumption the method relies on.
3
Bounds2 marks
A mass is 10 kg, correct to 1 decimal place. Write down the lower bound.
4
Equation of a Line3 marks
A line has gradient -3 and passes through (5, -11). Work out its equation.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 4. Work out y when x = 11.

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