B) the probability that the sample will contain at most 2 defective items is

ExperimentSome process that occurs with well defined outcomes.OutcomeA result from a single trial of the experiment.Eventa collection of one or more outcomes.Sample SpaceA collection of all of the outcomes of an experiment.P(E)the probability of E happeningn(E)the number of elements in EProbability answers should be given as...fractions or decimalsProbability questions that ask for percent or chance should be given as...percentagesTheoretical ProbabilityWhat we expect the Probability of an event to be.
ie. each number on a cube should have a 1/6 probability of occurringEmpirical ProbabilityThe Probability of an event after we run an experiment.
ie. each number on a cube should have a 1/6 probability of occurring, but we could roll a cube many times and may not get a certain number 1/6 of the time.ORone or the other or both; it's ok to get just oneANDHave to get BOTHTree Diagramcan be drawn vertically(down) or horizontally(side ways)
*You can count the ends of the branches to get the number in the sample space(outcomes)How to find the number of items when you know the probability it will occur..(# of items)(Probability it will occur)
ie. If the probability a person is left handed is 1/10, how many people would you expect to be left handed in a room with 360 people?
ANSWER: (360)(1/10) = 36Roster FormList the elements in brackets
ie. set A is a set of all even numbers from 1-10; 
A = {2,4,6,8,10}Subseta set whose elements are contained in another setComplementAll the elements in a set that are not in the subset
set S; S = {1,2,3,4,5,6,7,8,9,10}
subset A; A = {2,4,6,8,10}
complement of A; A' = {1,3,5,7,9}
Can be labeled with an ' OR another letter.Complements ProbabilitiesIf A and B are complements then P(A) + P(B) = 1
P(A) + P(A') = 1
P(A) + P(NOT A) = 1

The answer is 25uthere is no v in the question