A construction team is building several buildings. They want the average time spent on each building to be 15 hours or less. So far, they have spent thr following times for the first 4 buildings:17 hours, 10 hours,19 hours, 13 hours. How many hours should thry spend building ghr fifth building in order to match there goal of an average of 15 hours or less?

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)