premise: Twenty-four billion is invested in premium bonds and in the past 10 years the number of bonds in the draw has increased sevenfold. The chances of winning have recently changed from 27,500 to one to 24,000 to one. Record sales have meant that a new machine to select winning numbers randomly was required. The predecessor took five and a half hours to complete the draw, while the new machine can complete the task in half that time. Each month there are 1 million winners.
hypothesis: The new machine takes 150 minutes to draw the 1 million winning numbers.