Daily Practice

Foundation Plus

22nd November 1958

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Ratio2 marks
Red and blue stickers are in the ratio 2 : 5. There are 22 red stickers. How many stickers are there altogether?
2
Vectors2 marks
a is the column vector (-5, -5) and b is (-8, -7). Work out a + b as a column vector.
3
Probability Trees3 marks
3 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 3, lower quartile 12, median 14, upper quartile 23 and maximum 27. Work out the interquartile range.
5
Error Intervals2 marks
A number y is 60 when truncated to the nearest whole number. Write down the error interval for y.

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