2:25 PM

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Question 50

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14.. 38 B/s

Determine what type of random variable is represented in the given scenario.

"Number of DVD monthly sales in a Video Center"

a.

Discrete random variables

b. Independent Variables

c. Dependent Variables

d. Continuous random variables

Your answer is correct.

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Question 45

Correct

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It is a measure of the number of standard deviations a particular data point is away from the mean.

a. t-score

b. variance

c. p-value

d. z-score

Your answer is correct.

Question 46

Correct

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Five balls numbered 1, 2, 3, 4, and 5 are placed in a box. One is selected, its number is noted and then it
is replaced. If this experiment is repeated many times, find the mean of the numbers on the balls.

a.

1.41

b. None of the choices

c. 2

d. 3

Your answer is correct.

Question 47

Correct

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This is a complete description of all the possible values of the random variable, along with their
associated probabilities.

a. None of the choices

b. Cumulative Distribution Function

c. Probability Distribution✔

d. Random Experiment

Your answer is correct.

Question 48

Correct

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The normal curve is often called Gaussian distribution.

a. None of the choices

b. False

C. Cannot be determined

d. True✔

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Question 49

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The normal curve is asymptotic.

a. Cannot be determined

b. None of the choices

c. True
d. False

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Question 40

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The experiment consists of n independent, identical trials

a.

Binomial Experiment✔

b. Discrete Probability Distribution

C.

Poisson Experiment

d. Hypergeometric Experiment

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Question 41

Correct

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Determine what type of random variable is represented in the given scenario.

"The amount of time represents a task."

b. Dependent Variables

C. Discrete random variables

d. Continuous random variables

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Question 42

Correct

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What is the probability that the total of two dice will be greater than 9, given that the first die is a 5?

a. 7/36

b. 5/12

C. 11/36

d. 1/3

Your answer is correct.

Question 43

Correct

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Determine what type of random variable is

represented in the given scenario.

"Weight of the employees in a call center

company"

a. Continuous random variables

b. Independent Variables
C. Discrete random variables

d. Dependent Variables

Your answer is correct.

Question 44

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It is useful for describing the number of

events that will occur during a specific interval of time or in a specific distance, area, or volume.

a.

Discrete Probability Distribution

b. Hypergeometric Experiment C. Poisson Experiment✔

d. Binomial Experiment

38

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Question 35

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It is applied when the probability of success are not the same from trial to trial.

a. Binomial Experiment

b. Discrete Probability Distribution

c. Hypergeometric Experiment✔

d. Poisson Experiment

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Question 36

Correct

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The most common way to measure the spread of a normal distribution.

a. Median

b. Mode

c. Mean

d. Standard deviation

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Question 37

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The area under the part of a normal curve that lies within two standard deviation of the mean is

a.

about 99.7%

Ob. about 95%

C.
about 34.13%

d. about 68%

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Question 38

Correct

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The area under the part of a normal curve that lies within one standard deviation of the mean is

a.

about 95%

b. about 68%

C.

about 99.7%

d. about 34.13%

Your answer is correct.

Question 39

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It is a function or rule that assigns a number

to each outcome of an experiment.

a. Independent Variable

b. Dependent Variable

C.

Random variable
d. Probability Experiment

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38

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B/s

Question 30

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The normal distribution curve is symmetric about the mean.

a. True

b. False

C.

None of the choices

d. Cannot be determined

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Question 31

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These are the most important characteristics of any probability distribution.

a. Mean, median and mode

b. Mean and standard deviation

C.

None of the above

d. Variance

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Question 32

Correct

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Five balls numbered 1, 2, 3, 4, and 5 are placed in a box. One is selected, its number is noted and then it
is replaced. If this experiment is repeated many times, find the standard deviation of the numbers on
the balls.

a.

1.41✔

b. None of the choices

C.

d. 3

Your answer is correct.

Question 33

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It is commonly referred to as a normal curve,

a. Probability distribution

b. Normal Distribution

C.

None of the above

d. Standard distribution

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Question 34

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It is the square root of the variance.

a. Median

b. Mean

C. Mode

d. Standard deviation✔

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Question 25

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It is a mapping or list of all values of a random variable to their corresponding probabilities for a given
sample space.

a. Probability Distribution✔

b. Cumulative Distribution Function

C. Random Experiment

d. None of the choices

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Question 26

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A package of 8 AAA size batteries contains 2 that are defective and 6 that are non- defective. If we select
4 batteries at random from the package, what is the probability that the sample contains exactly 1
defective battery?

a. 0.5714%

b. 57%

C.

58%

d. 57.14%

Your answer is correct.

Question 27
Correct

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When you roll the two dice, what is the probability that the sum is 9?

a. 7/36

b. 1/9

C. 2/9

d. 5/36

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Question 28

Correct

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Determine what type of random variable is

represented in the given scenario.

"Outcomes in rolling a pair of dice"

a. Continuous random variables

b. Dependent Variables

C. Discrete random variables

d. Independent Variables

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Question 29

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Random means that the experiment may result in one of several possible values of

the variable.

a. None of the choices

b. Cannot be determined

C. False

d. True

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Question 21

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There are only two possible outcomes for each trial, success and failure.

a. Discrete Probability Distribution

b. Poisson Experiment

C.

Binomial Experiment✔
d. Hypergeometric Experiment

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Question 22

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It is a perfectly symmetric, mound-shaped distribution.

a. Gaussian Distribution

b. Normal distribution

C.

Both A and B

d. Standard distribution

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Question 23

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Five hundred raffle tickets are sold at #25 each for three prizes of $4,000, $2,500, and $1,000. After each
prize drawing, the winner ticket is then returned to the collection of tickets. What is the mean or
expected value if a person purchases four tickets?

$3,900

$2,400

$900

-100

P(x)
4/500

4/500

4/500

496/500

a. $31.20

b. -41.60✔

c. -19.20

d. 99.2

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Question 24

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It is a result of a single trial of a probability experiment.

a. Outcome✔

b. Sample space

c. Experiment

d. Chance

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Question 16

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1L

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39

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It is a measure of how spread out the values

are.

a. Mode

b. Median

C. Standard deviation✔

d. Mean

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Question 17

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These are random variables that can assume all values between any two specific values.

a.

None of the choices

b. Countable random variables

c. Continuous random variables

d. Discrete random variables

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Question 18
Correct

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Determine what type of random variable is

represented in the given scenario.

"Number of television per household"

a. Continuous random variables

b. Discrete random variables

c. Independent Variables

d. Dependent Variables

Your answer is correct.

Question 19

Correct

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The experiment consists of counting the number of events that will occur during a specific interval of
time or in a specific distance, area, or volume.

a.

Poisson Experiment✔

b. Hypergeometric Experiment

C.

Binomial Experiment

d. Discrete Probability Distribution

Your answer is correct.

Question 20

Correct
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These are random variables that can assume only a countable number of values.

a. Continuous random variables

b. Countable random variables

C. Discrete random variables

d. None of the choices

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Question 11

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39

B/s

is the set of all possible outcomes of a probability experiment.

a. Experiment

b. Outcome

c. Sample space✔

d. Chance

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Correct

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DOLE found that 83% of Filipinos think that having a college education is important to succeed in life. If a
random sample of 7 Filipinos is selected, find the probability that at most two people will agree with
that statement.

a. 0.0000

b. 0.0021

C. 0.0020

d. 0.0816

Your answer is correct.

Question 13

Correct

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The area under the part of a normal curve that lies within three standard deviation of the mean is

a.

about 68%

b. about 95%

C.

about 34.13%

d. about 99.7%✔

Your answer is correct.

Question 14

Correct
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The mean, median and mode have different values in a normal distribution.

a. True

b. Cannot be determined

C. None of the choices

d. False

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Question 15

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These are random variables that can take on

any of the countless number of values in an interval.

a. Countable random variables

b. None of the choices

C. Discrete random variables

d. Continuous random variables

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Question 6

Correct

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14.

4G

249 B/s

39

The normal distribution is unimodal.

a.

True✔

b. False

C.

None of the choices

d. Cannot be determined

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Question 7

Correct

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Five balls numbered 1, 2, 3, 4, and 5 are placed in a box. One is selected, its number is noted and then it
is replaced. If this experiment is repeated many times, find the variance of the numbers on the balls.

a. 1.41

b. None of the choices

C.

d. 2
Your answer is correct.

Question 8

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The probability of success remains the same from trial to trial.

a. Discrete Probability Distribution

b. Hypergeometric Experiment

C.

Poisson Experiment

d. Binomial Experiment

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Question 9

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The normal distribution is continuous.

a. False

b. True✔

C. None of the choices

d. Cannot be determined

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Question 10

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It is a numerical measure of the likelihood

that a specific event will occur.

a. Variable

b. Probability

C. Statistics

d. Experiment

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52

14... 39

B/s

Question 1

Correct

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A vintage car breaks down an average of four times per month. Find the probability that during the next
month this vintage card will have at most two breakdowns.

a.

0.1465

b. 0.0733

C. 0.2381

d. 0.0183
Your answer is correct.

Question 2

Correct

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The normal distribution is bell-shaped.

a. None of the choices

b. False

C. Cannot be determined

d. True✔

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Question 3

Correct

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When you roll the two dice, what is the probability that the sum is 4?

a. 11/12

b. 7/12

C. 1/12✔

d. 5/12

Your answer is correct.

Question 4

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DOLE found that 83% of Filipinos think that having a college education is important to succeed in life. If a
random sample of 7 Filipinos is selected, find the probability that exactly 4 will agree with that
statement.

a. 0.0816

b. 0.0818

C. 0.0817

d. 0.0819

Your answer is incorrect.

Question 5

Correct

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It represents the numerical value of a simple event of an experiment.

a. Probability Experiments

b. Independent Variables

c. Dependent Variables

d. Random variables

Your answer is correct.