Erica is a distance runner. the duration of her training runs for one week are given in the table below. answer the following questions based on the given information. day time monday 1 hr. 10 min tuesday 45 min wednesday 1 hr. 20 min thursday 30 min friday 50 min saturday rest sunday 1 hr. a) find the total time that erica ran that week and express the answer in mixed units. _ blank 1 and _ blank 2 b) find the difference between the amount of time erica trained on monday and the amount she trained on friday. _ blank 3 and _ blank 4

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.

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step-by-step explanation: