1. Senior Trip At a certain school 60 of the 100 boys and 60 of the 80 girls signed up for the senior trip. Is there an
association between going on the trip and gender?
A) We can't tell, because the class doesn't have the same
number of boys and girls.
B) Yes, because the same number of boys and girls
signed up
C) Yes, because a lower percentage of boys signed up
than of girls.
D) No, because the people on the trip were 50% boys and
50% girls.

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.