Daily Practice

Higher

10th December 1979

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

1
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 164 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Bounds2 marks
A mass is 350 kg, correct to the nearest 10. Write down the upper bound.
4
Equation of a Line3 marks
A line has gradient 2 and passes through (3, 10). Work out its equation.
5
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.

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