Foundation Plus
11th January 1970
- 1Real Life and Distance Time Graphs2 marks
Aisha drives 60 km in 1.5 hours. Work out the average speed in km/h.
- 2Vectors2 marks
a is the column vector (-6, 5) and b is (2, -2). Work out a + b as a column vector.
- 3Probability Trees3 marks
8 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
Four classes in order have frequencies 7, 5, 11, 3. Write down the cumulative frequency at the end of the third class.
- 5Error Intervals2 marks
A number y is 89 when truncated to the nearest whole number. Write down the error interval for y.
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