Question 4 [15 marks]. A performance of an opera is live-streamed online. The opera has four acts which last 34, 35, 26 and 36 minutes. Between each act the streaming service shows 5 minutes of adverts. All the time that adverts are being shown there is a number displayed on screen for viewers to make a 2 donation to a charity for retired opera singers. The opera begins at 7.00pm when there are 214,353 people watching online. The number of online viewers is then recorded again at halfhour intervals: Viewers 256,743 269,459 238,850 my 234,653 At the end of the opera there are 202,464 people viewing. (a) If donations to the charity made during the opera total 1,286 calculate the rate of texting the charity number per person hour of online viewing stating clearly any assumptions you make. (b) Explain the Principle of Correspondence as it relates to this opera charity study