The school arranged for a field trip to the local museum. Due to social distancing restraints, only 30 people, including chaperones, are allowed to participate. Each student costs the district $2 and each chaperone is $5. If the district spent $141 on the trip, how many students and how many chaperones attended?

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Novak gives 9 packs of paper to a group of 5 students. if the group shares the paper equally how many packs of paper does each student get. write the a answer as a mixed number

Hdtv screens usually have a width-to -height ratio of 16: 9. which screen dimensions are in the same proportion?