5. Dados los vértices de un triángulo A(2,3), B(-4, 5) y C(-2, 7), hallar las coordenadas del baricentro (G). G(x1 + x2 + x3 , y1+ y2 +y3)
3 3​

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?