WGU STATISTICS EXAM 87 QUESTIONS WITH
VERIFIED ANSWERS
For any event A, 0 ≤ P(A) ≤ 1. - CORRECT ANSWER The probability of any event is
between one and o. What is the equation for this?
One, the equation is :P(S) = 1 - CORRECT ANSWER The sum of all possible
probabilities is___?
P(note A) = 1 - P(A) - CORRECT ANSWER What is the complement rule? or the
probability that an event does not occur is 1 minus the probability that it does
occur.
P(A or B) = P(event A occurs or event B occurs or both occur) - CORRECT ANSWER
In probability, "OR" means either one or the other or both.
disjoint or mutually exclusive - CORRECT ANSWER Two events that cannot occur at
the same time are called
If A and B are disjoint events, then P(A or B) = P(A) + P(B). - CORRECT ANSWER The
Addition Rule for Disjoint Events:
P(event A occurs and event B occurs) - CORRECT ANSWER P(A and B) =
is about whether or not it is possible for the events to occur at the same time -
CORRECT ANSWER The idea of disjoint events is
, whether or not the events affect each other in the sense that the occurrence of
one event affects the probability of the occurrence of the other - CORRECT
ANSWER The idea of independent events is about
A and B cannot be independent - CORRECT ANSWER If A and B Disjoint
P(A and B) = P(A) * P(B). - CORRECT ANSWER If A and B are two independent
events (Multiplication Rule)
P(A and B and C) = P(A) * P(B) * P(C) - CORRECT ANSWER if A, B and C are three
independent events,
P(A) = 1 - P(note A), - CORRECT ANSWER The Complement Rule,
Applying the Multiplication rule: Now, using the multiplication rule, = 1 - (.56 * .56
* .56 * .56 * .56 * .56 * .56 * .56 * .56 * .56) = 1 - .003 = .997. - CORRECT ANSWER
P(L) = 1 - P(not L) = 1 - P(not O1 and not O2 and not O3 and not O4 and not O5
and not O6 and not O7 and not O8 and not O9 and not O10).
P((O and O) or (O and not O) or (not O and O)) = (.44 * .44) + (.44 * .56) + (.56
* .44) = .6864. - CORRECT ANSWER P(at least one person chosen has blood type
O)
P(A and B)= 0 - CORRECT ANSWER If A and B are disjoint events -
VERIFIED ANSWERS
For any event A, 0 ≤ P(A) ≤ 1. - CORRECT ANSWER The probability of any event is
between one and o. What is the equation for this?
One, the equation is :P(S) = 1 - CORRECT ANSWER The sum of all possible
probabilities is___?
P(note A) = 1 - P(A) - CORRECT ANSWER What is the complement rule? or the
probability that an event does not occur is 1 minus the probability that it does
occur.
P(A or B) = P(event A occurs or event B occurs or both occur) - CORRECT ANSWER
In probability, "OR" means either one or the other or both.
disjoint or mutually exclusive - CORRECT ANSWER Two events that cannot occur at
the same time are called
If A and B are disjoint events, then P(A or B) = P(A) + P(B). - CORRECT ANSWER The
Addition Rule for Disjoint Events:
P(event A occurs and event B occurs) - CORRECT ANSWER P(A and B) =
is about whether or not it is possible for the events to occur at the same time -
CORRECT ANSWER The idea of disjoint events is
, whether or not the events affect each other in the sense that the occurrence of
one event affects the probability of the occurrence of the other - CORRECT
ANSWER The idea of independent events is about
A and B cannot be independent - CORRECT ANSWER If A and B Disjoint
P(A and B) = P(A) * P(B). - CORRECT ANSWER If A and B are two independent
events (Multiplication Rule)
P(A and B and C) = P(A) * P(B) * P(C) - CORRECT ANSWER if A, B and C are three
independent events,
P(A) = 1 - P(note A), - CORRECT ANSWER The Complement Rule,
Applying the Multiplication rule: Now, using the multiplication rule, = 1 - (.56 * .56
* .56 * .56 * .56 * .56 * .56 * .56 * .56 * .56) = 1 - .003 = .997. - CORRECT ANSWER
P(L) = 1 - P(not L) = 1 - P(not O1 and not O2 and not O3 and not O4 and not O5
and not O6 and not O7 and not O8 and not O9 and not O10).
P((O and O) or (O and not O) or (not O and O)) = (.44 * .44) + (.44 * .56) + (.56
* .44) = .6864. - CORRECT ANSWER P(at least one person chosen has blood type
O)
P(A and B)= 0 - CORRECT ANSWER If A and B are disjoint events -
