Angle c is an inscribed angle of circle p. angle c measures (20x - 5)º and arc ab measures (30x + 30)". find the measure of arc ab 100 degrees 50 degrees 75 degrees 150 degreea

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.