MST (PREFINAL)
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Questions and Answers

Is a measure of the likelihood of a random phenomenon or chance behavior.

PROBABILITY

Values are always assigned on a scale from 0 to 1.

PROBABILITY

Near zero indicates an event is quite unlikely to occur.

PROBABILITY

Near one indicates an event is almost certain to occur.

<p>PROBABILITY</p> Signup and view all the answers

Father of Modern Probability

<p>BLAISE PASCAL</p> Signup and view all the answers

In statistics, the notion of an experiment differs somewhat from that of an experiment in the physical sciences.

<p>STATISTICAL EXPERIMENTS</p> Signup and view all the answers

Probability determines outcomes

<p>STATISTICAL EXPERIMENTS</p> Signup and view all the answers

for an experiment it is the set of all experimental outcomes.

<p>SAMPLE SPACE</p> Signup and view all the answers

It is any process that generates well-defined outcomes

<p>EXPERIMENT</p> Signup and view all the answers

are sometimes called random experiments.

<p>STATISTICAL ELEMENTS</p> Signup and view all the answers

It is also called a sample point.

<p>EXPERIMENTAL OUTCOME</p> Signup and view all the answers

The probability of drawing of any face card is 4/52

<p>False</p> Signup and view all the answers

In statistical experiments, probability determines outcomes.

<p>True</p> Signup and view all the answers

Blaise Pascal is the Father of Statistic and Probability.

<p>False</p> Signup and view all the answers

An experimental point is also called a sample outcome.

<p>False</p> Signup and view all the answers

Probability is a numerical measure of the likelihood that an event will occur.

<p>True</p> Signup and view all the answers

The probability of drawing of any red card is 1/13.

<p>False</p> Signup and view all the answers

Subjective method assigns probabilities based on educated guess.

<p>True</p> Signup and view all the answers

If you will toss a coin two times then there are four outcomes.

<p>True</p> Signup and view all the answers

The probability of drawing king of hearts in a deck of cards is 1/52.

<p>True</p> Signup and view all the answers

Relative Frequency Method assigns probabilities based on experimentation.

<p>True</p> Signup and view all the answers

The sample space for an experiment is the set of all experimental outcomes.

<p>True</p> Signup and view all the answers

The sum of all the probabilities must be equal to 1.

<p>True</p> Signup and view all the answers

Empirical Method assigns probabilities based on the assumption of equally likely outcomes.

<p>False</p> Signup and view all the answers

The probability of drawing of a four card is 1/13

<p>True</p> Signup and view all the answers

A probability near zero indicates an events is quite likely to occur.

<p>False</p> Signup and view all the answers

Assigning probabilities based on the assumption of equally likely outcomes

<p>ASSIGNING PROBABILITIES</p> Signup and view all the answers

An experiment is said to have equally likely outcomes when each simple event has the same probability of occurring.

<p>CLASSICAL METHOD</p> Signup and view all the answers

It is also called Empirical method

<p>RELATIVE FREQUENCY METHOD</p> Signup and view all the answers

Assigning probabilities based on experimentation or historical data

<p>RELATIVE FREQUENCY METHOD</p> Signup and view all the answers

Assigning probabilities based on judgement

<p>SUBJECTIVE METHOD</p> Signup and view all the answers

Are probabilities obtained based upon an educated guess.

<p>SUBJECTIVE METHOD</p> Signup and view all the answers

is a collection of sample point

<p>EVENT</p> Signup and view all the answers

It is equal to the sum of the probabilities of the sample points in the event.

<p>PROBABILITY OF ANY EVENTS</p> Signup and view all the answers

It is defined to be the event consisting of all sample points that are not in A.

<p>COMPLEMENT OF AN EVENT</p> Signup and view all the answers

It is the event containing all sample points that are in A or B or both.

<p>UNION OF TWO EVENTS</p> Signup and view all the answers

It is denoted by A(c)

<p>COMPLEMENT OF AN EVENT</p> Signup and view all the answers

It is A and B is denoted by AUB (A or B).

<p>UNION OF TWO EVENTS</p> Signup and view all the answers

It is A and B is the set of all sample points that are in both A and B. It is A and B is denoted by A^B (A and B).

<p>INTERSECTUION OF TWO EVENTS</p> Signup and view all the answers

It provides a way to compute the probability of event A, or B, or both A and B occurring. The law is written as: P( AUB ) = P(A) + P(B) - P( A^B )

<p>ADDITION LAW</p> Signup and view all the answers

It is if the events have no sample points in common. It is if, when one event occurs, the other cannot occur.

<p>MUTUALLY EXCLUSIVE EVENTS</p> Signup and view all the answers

The probability that a randomly selected murder victim was male is 0.7515. The probability that a randomly selected murder victim was less than 18 years old given that he was male was 0.1020. What is the probability that a randomly selected murder victim is male and is less than 18 years old?

<p>0.7515 x 0.1020 = 0.0767</p> Signup and view all the answers

According to the Philippines Animal Welfare Society, 31.6% of Filipino households own a dog. What is the probability that a randomly selected household does not own a dog?

<p>1 - 0.316 = 0.6840</p> Signup and view all the answers

There are 6 pillows in a bed, 3 are red, 2 are yellow and 1 is blue. What is the probability of picking a yellow pillow?

<p>1/3 or 0.33</p> Signup and view all the answers

The probability that a student in this class is not an Economics major (E) is 28/50. What is the complement of P(E)?

<p>28 / 50 = 0.56</p> Signup and view all the answers

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