Quelpr
2 marksExperimental and Theoretical Probabilities

CSEC Mathematics · January 2013 · Paper 2 · Question 7(d)

To qualify for the next round, a student must score AT LEAST 40 points.

What is the probability that a student selected at random qualifies for the next round?

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 7(a)(i)State the modal class interval.[1 mark]
  2. 7(a)(ii)State the class interval in which a score of 19.4 would lie.[1 mark]
  3. 7(b)(i)a)Copy and complete the table to show the class mid-points.[2 marks]
  4. 7(b)(i)b)Copy and complete the table to show the values of "f x x".[2 marks]
  5. 7(b)(ii)Calculate the mean score for the sample.[3 marks]
  6. 7(c)Explain why the value of the mean obtained in (b)(ii) is only an estimate of the true value.[1 mark]

More practice: the rest of this paper · more Experimental and Theoretical Probabilities questions · all CSEC Mathematics past papers