Se opina que una droga comúnmente prescrita en el mercado para aliviar la tensión nerviosa es solamente efectiva en un 60%. los resultados experimentales de una nueva droga administrada a una muestra aleatoria de 100 adultos que sufrían de tensión nerviosa mostraron que 70 de ellos se aliviaron

I don't understand the question. You are not asking anything specific here. If you're looking for a translation then it is "It is believed that a drug commonly prescribed in the market to relieve nerve tension is only effective in 60%. Experimental results of a new drug administered to a random sample of 100 adults suffering from nervous tension showed that 70 of them were relieved"

Explanation:

en la escuela tenemos momentos muy cheveres y momentos muy aburridos.