Quelpr
1 markClass Features

CSEC Mathematics · Question 5(a)(i)

A cumulative frequency distribution of the volume of petrol needed to fill the tanks of 150 different vehicles is shown in a table.

For the class 21-30, determine the lower class boundary.

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Other parts of this question

  1. 5(a)(ii)For the class 21-30, determine the class width.[1 mark]
  2. 5(b)How many vehicles were recorded in the class 31-40?[1 mark]
  3. 5(c)A vehicle is chosen at random from the 150 vehicles. What is the probability that the volume of petrol needed to fill its tank is more than 50.5 litres? Leave…[2 marks]
  4. 5(d)Byron estimates the median amount of petrol to be 43.5 litres. Explain why Byron's estimate is INCORRECT.[1 mark]
  5. 5(e)On the partially labelled grid below, construct a histogram to represent the distribution of the volume of petrol needed to fill the tanks of the 150 vehicles.[3 marks]

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