A hotel is worried about the reliability of its lift. It keeps a weekly record of the number of times it breaks down over a period of 26 weeks. Number of breakdowns 0-1 Frequency of breakdowns

(f) The data collected are summarised in the 18 table opposite. 2-3 7 a Estimate the mean number of breakdowns. 4-5 1 b Use interpolation to estimate the median number of breakdowns. The hotel considers that an average of more than one breakdown per week is not acceptable. Judging from your answers to b and c write down with a reason whether or not you think the hotel should consider getting a new lift.

AppendixLO1