When a particle is located a distance x meters from the origin, a force of cos(πx/7) newtons acts on it. Find the work done in moving the particle from x=3 to x=3.5. equation editorEquation Editor Find the work done in moving the particle from x=3.5 to x=4. equation editorEquation Editor Find the work done in moving the particle from x=3 to x=4.

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.