SOLUTION :
Answer - Stratified random sampling technique is used.
because, in Stratified random sampling the population is sub divided in homogeneous group or strata and from each stratum ( group ) a random sample is drawn.so researcher are interested in average sugar intake among young adults, middle- age adults and senior citizens. So whole population is divided in to sub divided homogeneous group likes young adults, middle-age adults and senior citizens, and we collect data from randomly select 1000 respondents from each age category to receive a mail - in - survey.
Stratified random sampling technique is used for the above research.
4 pts Question 6 Suppose that researchers are interested in comparing average sugar intake among young...