Identified the two consecutive integers in which each square root lies between. -√156 √320 -√249

1-  

156 lies between 144 and 169

So lies between 12 and 13.

2-  

320 lies between 289 and 324.

So lies between 17 and 18.

3-  

249 lies between 225 and 256

So lies between 15 and 16.

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.