The table below shows the number of students in each year level at Seido High School. (see attached pic) Emma does a survey to find out what type of TV programs people like to watch. She decides to interview 70 students from Seido High School. a. Use stratified sampling technique to decide how many students should be asked from each year level. b. If the samples shall only come from 3 of the year levels, what sampling technique will you use? Discuss.

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