What is the mean of the probability distribution on the random variable , the number that will appear when you roll a diea. u=-21/6 c. u = 21/6b. u=-7/2 d. u= 7/2 TN equat to the summation of the product of PCx) and (x )aean of a discrete random variablec variance of discrete random vanabled variance of sample meansof eample meansN The measure ia constant and will approach only one value even an experiment is repeated many times.O. varienced. none of theseameanb standard deviationDirection: Choose the letter of the correct answer Write your answer on the space provided for each number Show yoursOution to support you answer (4 paints each)25-20 What is the mean of the probability distribution on the random variable, the number that will appear when youroll a die?21a. pC. =d.u =b. 429-32 The standard deviation of the probability distribution isa-1.36b 1.3633-36 What is the variance of the random variable X which is the number of heads when you toss a coin?if the variance is 2.95.C. 1.85d. 2.95C. a216b a?d. a? =3740. The mean of the number of tails when you toss a coin isa. =d. u-12-16

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A First Course in Probability (10th Edition)

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Chapter1: Combinatorial Analysis

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

What is the mean of the probability distribution on the random variable , the number that will appear when you roll a die

a. u=-21/6 c. u = 21/6

b. u=-7/2 d. u= 7/2

TN equat to the summation of the product of PCx) and (x )
aean of a discrete random variable
c variance of discrete random vanable
d variance of sample means
of eample means
N The measure ia constant and will approach only one value even an experiment is repeated many times.
O. varience
d. none of these
amean
b standard deviation
Direction: Choose the letter of the correct answer Write your answer on the space provided for each number Show your
sOution to support you answer (4 paints each)
25-20 What is the mean of the probability distribution on the random variable, the number that will appear when you
roll a die?
21
a. p
C. =
d.
u =
b. 4
29-32 The standard deviation of the probability distribution is
a-1.36
b 1.36
33-36 What is the variance of the random variable X which is the number of heads when you toss a coin?
if the variance is 2.95.
C. 1.85
d. 2.95
C. a2
16
b a?
d. a? =
37
40. The mean of the number of tails when you toss a coin is
a. =
d. u
-12-16

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