Suppose the probability of an event occurring is p(a), and the probability of the event not occurring is p(a'). if p(a) = m and p(a') = n, which of the following equations must be true?
a. m = 1 + n
b. n = 1 - m
c. n = m + 1
d. m =n -1

B

Step-by-step explanation:

P(A)+P(A')=1

m+n=1

B is the only answer equal this if you add m to both sides.

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.

c: lkllmn.

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