The proprietor of a garage believes that the temperature outside and the number of cans of soft drinks sold are connected. She noted the maximum daytime temperature

(in degrees Celsius) and the soft drinks sales on 10 working days chosen at random.

Temperature Cans sold 14 19 11 29 17 47 8 12 20 45 13 41 24 67 3 10 16 28 5 21 The correlation coefficient for this sample is 0.871 to three decimal places. Test the hypothesis that there is no correlation between temperature and sales against the alternative that there is positive correlation. Use a 5 per cent level of significance.