Daily Practice

Foundation Plus

2nd January 1958

5 questions · 12 marks · Grades 4-6 · 128 question types in this band

1
Best Buy Questions3 marks
A pack of 8 teabags costs £2.00. A pack of 16 costs £3.36. Which pack is better value?
2
Vectors2 marks
a is the column vector (-6, -1) and b is (-2, 2). Work out a + b as a column vector.
3
Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Scatter Graphs2 marks
A scatter graph plots how far a lorry has driven and the fuel left in its tank. What type of correlation would you expect?
5
Error Intervals2 marks
A number y is 39 when truncated to the nearest whole number. Write down the error interval for y.

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