A researcher is interested to know if smoking and heart disease are associated with each other in the population of Singapore. The researcher takes a census of the population in Singapore with a 100% response rate. The researcher conducts a chisquared test on the census data at 5% signicance level and obtains a p-value of 0.001. Which of the following is a valid conclusion? [1 mark) -j_ _j- None of the other options is a valid conclusion. Since pvalue is less than 0.05, the null hypothesis is not rejected at the 5% signicance level. and the researcher concludes that smoking and heart disease are not associated with each other in the population. Since pvalue is less than 0.05, the null hypothesis is rejected at the 5% significance level, and the researcher concludes that smoking and heart disease are associated with each other in the population. Since pvalue is less than 0.05, the null hypothesis is not rejected at the 5% signicance level. and the researcher concludes that smoking and heart disease are associated with each other in the population. Since pvalue is less than 0.05, the null hypothesis is rejected at the 5% significance level, and the researcher concludes that smoking and heart disease are not associated with each other in the population