solve question 1 a. based on the info given

Answers must be written within the answer boxes provided. Full marks are not necessarily awarded for a correct answer with no working. Answers must be supported by working andfor explanations. Solutions found from a graphic display calculator should be supported by suitable working. For example, if graphs are used to nd a solution, you should sketch these as part of your answer. Where an answer is incorrect, some marks may be given for a correct method, provided this is shown by written working. You are therefore advised to show all working. 1 . [Maximum mark: 6] Eduardo believes that there is a linear relationship between the age of a male runner and the time it takes them to run 5000 metres. To test this, he recorded the age, x years, and the time, 1* minutes, for eight males in a single 5000m race. His results are presented in the following table and scatter diagram. x, years t, minutes Time (a) For this data, nd the value of the Pearson's productmoment correlation coefcient, r. [2]