A school cafeteria has a juice dispencer that holds 640 ounces of juice when completely filled. Juice is offered in 2 sizes: 4 ounces or 8 ounces. Each day, approximately 7 out of 10 students choose the 4-ounce serving size and the other student choose the 8-ounce serving size.

Ahomeowner plans to hang wallpaper on one wall of a bedroom that is 10 feet long if a stripe of wallpaper is 20 inches wide and stripes or hung vertically how many stripes on wall paper with the homeowner required

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?