A company manufactures a computer device that can be used in different temperature range. The researcher in this manufacturing took a sample of 9 computer device and collects the information on the temperature (C ) and life time (in hours) of these computer devices. The increased in temperature will shortens the life time of the device. The data is as follows. Computer Device Temperature, (C) Life time (hours) 10 420 20 365 30 285 40 220 50 176 60 117 70 69 80 34 90 5 a) Calculate the Pearson's Product Moment correlation coefficient between the temperature and the life time. Comment on the relationship between the two variables. (4 marks)