2. En los imos cuatro examenes de matemáticas Judna saco 96, 87,93 y 89. Que puntaje debe sacar en el examen próximo para que su promedio aumente a 93?

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.