: A coin is tossed 4 times. Let the random variable X denote the # of tails that occur. a. List the outcomes of the experiment. (Note: n(S) = 2ª = 16) S= { b. Find the value assigned to each outcome by the random variable X. X = c. Find the event consisting of the outcomes to which a value of 2 has been assigned by X. E = {

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 38E
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#2 A coin is tossed 4 times. Let the random variable X denote the # of tails that occur.
a. List the outcomes of the experiment. (Note: n(S) = 2ª = 16)
S = {
b. Find the value assigned to each outcome by the random variable X.
X =
c. Find the event consisting of the outcomes to which a value of 2 has been
assigned by X.
E = {
d. Create a probability distribution of X.
1
2
3
4
|P(X = x)
NOTE: 0 < P(x,)< 1
and
P(x1) + P(x2) + P(x3) +...P(xn) = 1
e. Find
а. Р(X - 1) -
b. P(X > 2) =
c. P(1 < X < 3) =
d. P(X < 4) =
е. Р(X - -4)
f. In the space above right, draw a histogram of the probability distribution.
What is true about each bar?
Transcribed Image Text:#2 A coin is tossed 4 times. Let the random variable X denote the # of tails that occur. a. List the outcomes of the experiment. (Note: n(S) = 2ª = 16) S = { b. Find the value assigned to each outcome by the random variable X. X = c. Find the event consisting of the outcomes to which a value of 2 has been assigned by X. E = { d. Create a probability distribution of X. 1 2 3 4 |P(X = x) NOTE: 0 < P(x,)< 1 and P(x1) + P(x2) + P(x3) +...P(xn) = 1 e. Find а. Р(X - 1) - b. P(X > 2) = c. P(1 < X < 3) = d. P(X < 4) = е. Р(X - -4) f. In the space above right, draw a histogram of the probability distribution. What is true about each bar?
#5
Let X denote the random variable that gives the sum of the faces that fall uppermost
when two fair die are rolled.
Create a probability distribution of X.
P(X = x)
In the space above right, draw a histogram of the probability distribution.
Find:
а. Р(Х- 6) -
b. P(X = 6 or 12) =
с. Р(Х < 6) -
Types of sets of X :
1. discrete, finite
ie.
2. discrete infinite
3. continuous
ie.
Determine the probability distribution of the following: After the private screening of a new tv pilot
# 28
audience members were asked to rate the show on a scale of 1 - 10. From a group of 140 people the
following responses were obtained:
rating x
1
2
3
4
7
8
9
10
frequency n(x)
1
4
| 11
21
28 29
16
P(X = x)
Transcribed Image Text:#5 Let X denote the random variable that gives the sum of the faces that fall uppermost when two fair die are rolled. Create a probability distribution of X. P(X = x) In the space above right, draw a histogram of the probability distribution. Find: а. Р(Х- 6) - b. P(X = 6 or 12) = с. Р(Х < 6) - Types of sets of X : 1. discrete, finite ie. 2. discrete infinite 3. continuous ie. Determine the probability distribution of the following: After the private screening of a new tv pilot # 28 audience members were asked to rate the show on a scale of 1 - 10. From a group of 140 people the following responses were obtained: rating x 1 2 3 4 7 8 9 10 frequency n(x) 1 4 | 11 21 28 29 16 P(X = x)
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