Un ciclista que hace acrobacias necesita una rampa de 10 metros de largo con una altura de 5 metros, y una inclinación con respecto a la horizontal de 30°. Para mejorar el soporte de la rampa se coloca otra base vertical a 4 metros del final de la rampa ¿Qué altura debe tener el soporte?

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?