what is \frac{\frac{3\frac{1}{3}}{10}+\frac {0.175}{0.35}}{\frac{1}{75}-1\frac{ 11}{17}\cdot \frac{51}{56}}-\frac{\frac{\left(\f rac{11}{18}-\frac{1}{15}\right)}{1. 4}}{\left(0.5-\frac{1}{9}\right)\cd ot 3}?

Step-by-step explanation:

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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.