STATS AND PROB 3rd QUARTER EXAM REVIEW

Question 1

TRUE OR FALSE. Probability is a set of all possible outcomes.

Accepted Answer

False

Question 2

What must be the value of the probability of each random variable?

Accepted Answer

0≤P(X)≤1

Question 3

What is the mean?

Accepted Answer

4.35

Question 4

X is a random variable defined by the number of heads in three tosses of a coin. What are the values of x?

Accepted Answer

X=0,1,2,3

Question 5

The probabilities that a printer produces 0,1,2, and 3 misprints are 42%, 28%, 18%, and 12% respectively. FInd the mean.

Accepted Answer

1

Question 6

Which of the following terms is considered as a measure of the central location of a random variable?

Accepted Answer

Mean Value

Question 7

Suppose you tossed two coins. What are the possible outcomes?

Accepted Answer

HH, HT, TH, TT

Question 8

How can you determine if a table shows a probability mass function?

Accepted Answer

Both A and B

Question 9

Which the following is discrete random variable?

Accepted Answer

Camille

Question 10

What is the sum of all the probabilities of all the events in a discrete probability distribution?

Accepted Answer

1

Question 11

Which of the following is a variable whose value is obtained by measuring?

Accepted Answer

Continuous

Question 12

The scores on a standardized test are normally distributed with a mean of 60 and a standard deviation of 15.

Accepted Answer

5

Question 13

What is the formula in solving the variance?

Accepted Answer

σ^2=\sum_{ }^{ }〖〖(X-μ)〗^2∙P(X)〗

Question 14

It is a table showing all possible values of a discrete random variable, together with their probabilities.

Accepted Answer

Discete Probability Distribution

Question 15

You flip a coin thrice. What is the probability of getting 2 heads?

Accepted Answer

\frac{3}{8}

Question 16

The following table shows the probability distribution of a discrete random variable X. Find the value of n.

Accepted Answer

0.35

Question 17

Two values that can describe how scattered or spread out the scores are from the mean value of the random variable.

Accepted Answer

Variance and standard deviation

Question 18

Which of the following random variables is continuous?

Accepted Answer

The amount of time it takes to finish a book

Question 19

What are the possible outcomes of tossing a coin once?

Accepted Answer

Head, Tail

Question 20

What formula is appropriate to use in finding the mean of a discrete random variable?

Accepted Answer

μ=\sum_{ }^{ }〖X∙P(X)〗

Question 21

The graph of a normal distribution is symmetrical about the ______________.

Accepted Answer

Mean

Question 22

Suppose you tossed two coins. What the possible values of the random variable for the number of heads??

Accepted Answer

0, 1, 2

Question 23

What is P(1)?

Accepted Answer

\frac{2}{15}

Question 24

What is the σ?

Accepted Answer

0.91

Question 25

How many outcomes are there in rolling a die?

Accepted Answer

6

Question 26

Compute the Mean, Variance, and Standard deviation from the given table below:

Accepted Answer

SOLVE, SOLVE, SOLVE

Question 27

What is the variance?

Accepted Answer

0.83

Question 28

TRUE OR FALSE. A random variable can be discrete or continuous.

Accepted Answer

True

Question 29

Taverage height of adult women in a certain city is 64 inches, with a standard deviation of 2.5 inches.

Accepted Answer

95%

Question 30

You flip a coin thrice. What is the probability of getting no heads?

Accepted Answer

1/8

STATS AND PROB 3rd QUARTER EXAM REVIEW

Questions 30

STATS AND PROB 3rd QUARTER EXAM REVIEW

Questions 30