(a) In a survey, 50 students were asked how long they spent exercising during one particular week. The results are summarised in the table. Time (t minutes) | Frequency ---|--- 0 ≤ t < 30 | 10 30 < t < 60 | 15 60 < t < 90 | 11 90 ≤ t < 120 | 7 120 < t < 150 | 5 150 < t < 180 | 2

1. (a)(i)Calculate an estimate of the mean time each student spent exercising that week.[3]
2. (a)(ii)During that week, the time Simon spent exercising is shown below. Tuesday 12.37 p.m. until 1.24 p.m. Thursday 8.57 a.m. until 9.42 a.m. Which interval is his time recorded in?[1]
3. (b)(i)A gym has four different types of machines. Carol is going to draw a pie chart to show how many times the machines are used in one day. She has started to make a table. Machine | Frequency | Angle of sector ---|---|--- Running | 90 | 120° Rowing | 75 | Cycling | 57 | Weights | | 64° Complete the table.[2]
4. (b)(ii)Complete the pie chart. [Figure 3.1][1]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.