Indira keeps a record of the journey times taken by workers in her company to get to work. The table and the histogram each display some of this information.
(a)[5]
Finish the table and the histogram.
(b)[4]
Calculate an estimated mean time.
(c)[1]
Give one reason why Rashid could be incorrect.
(d)[4]
Calculate the probability that one worker takes 60 minutes or less while the other two each take more than 60 minutes.
Worked solution & mark scheme
This 14-mark question has a full step-by-step worked solution and mark scheme. One marking point: “28 in table” …