• En un vuelo con 200 pasajeros que se dirigía a Miami, algunos pasajeros (clase
económica) pagaron $200.00 y otros
(primera clase) $250.00 por sus boletos
de avión. Si los ingresos por concepto de
venta de boletos en ese vuelo fueron de
$44,000.00, ¿cuántos boletos se
vendieron de cada categoría?

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?