CAPE Applied Mathematics Unit 1 · 2014 · Paper 1 · Question Q5
Items 4–5 refer to the following table which shows the distribution of the time, in minutes, that 90 patients waited before being seen by a doctor.
\begin{array}{|l|c|c|c|c|c|} \hline \text{Waiting time (in minutes)} & 0-6 & 7-13 & 14-20 & 21-27 & 28-34 \\ \hline \text{Number of patients} & 5 & 27 & 30 & 20 & 8 \\ \hline \end{array}
The class width of the interval 14–20 minutes is
- (A)6.0 minutes
- (B)6.5 minutes
- (C)7.0 minutes
- (D)7.5 minutes
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