(a) For the spurious correlation data in Table 15.A.2 (Appendix 15.A), xt=honeyproducing bee colonies (US, USDA), 1000s of colonies, yt-Juvenile arrests for possession of marijuana (US, DEA), for the period 1990–2009, estimate their correlation coefficient and its p-value.

(b) Estimate the correlation coefficient between the above two data series after detrending and dememorizing (when needed) and compare the results.

(c) Using your answer in (b), discuss how the correlation in (a) is statistically spurious.