or fewer children. (Data from: gss.nore.org 3 2 0 * .165 .258 .162 281 P(x) Find the expected value for the number of children Solution Using the formula for the expected val Ex)= 0(.281) + 1(.162) +2(.258) 3(.165) + 1.804. For those respondents with 7 or fewer childre is 1.804 9.1 Exercises 12. or each of the experiments described, let x determine a random vari- hle and use your knowledge ofprobability to prepare a probability distribution. (Hint: Use a tree diagram.) 5 xr 4 P(x) 1. Four children are born, and the number of boys is noted. (Assume an equal chance of a boy or a girl for each birth.) Find the ex 2. Two dice are rolled, and the total number of dots is recorded. bility func 3. Three cards are drawn from a deck. The number of Queens are 13. P counted. 4 4. Two names are drawn from a hat, signifying who should go pick up pizza. Three of the names are on the swim team and two are not. The number of swimmers selected is counted. .3 Draw a histogram for each of the given exercises, and shade the region hat gives the indicated probability. (See Example 1.) .2 5. Exercise 1; P(x 2) . Exercise 2; P(x .1 11) Exercise 3; P(at least one queen) Exercise 4: P(fewer than two swimmers I/
or fewer children. (Data from: gss.nore.org 3 2 0 * .165 .258 .162 281 P(x) Find the expected value for the number of children Solution Using the formula for the expected val Ex)= 0(.281) + 1(.162) +2(.258) 3(.165) + 1.804. For those respondents with 7 or fewer childre is 1.804 9.1 Exercises 12. or each of the experiments described, let x determine a random vari- hle and use your knowledge ofprobability to prepare a probability distribution. (Hint: Use a tree diagram.) 5 xr 4 P(x) 1. Four children are born, and the number of boys is noted. (Assume an equal chance of a boy or a girl for each birth.) Find the ex 2. Two dice are rolled, and the total number of dots is recorded. bility func 3. Three cards are drawn from a deck. The number of Queens are 13. P counted. 4 4. Two names are drawn from a hat, signifying who should go pick up pizza. Three of the names are on the swim team and two are not. The number of swimmers selected is counted. .3 Draw a histogram for each of the given exercises, and shade the region hat gives the indicated probability. (See Example 1.) .2 5. Exercise 1; P(x 2) . Exercise 2; P(x .1 11) Exercise 3; P(at least one queen) Exercise 4: P(fewer than two swimmers I/
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
Can you please do number 1
![or fewer children. (Data from: gss.nore.org
3
2
0
*
.165
.258
.162
281
P(x)
Find the expected value for the number of children
Solution Using the formula for the expected val
Ex)= 0(.281) + 1(.162) +2(.258) 3(.165) +
1.804.
For those respondents with 7 or fewer childre
is 1.804
9.1 Exercises
12.
or each of the experiments described, let x determine a random vari-
hle and use your knowledge ofprobability to prepare a probability
distribution. (Hint: Use a tree diagram.)
5
xr
4
P(x)
1. Four children are born, and the number of boys is noted.
(Assume an equal chance of a boy or a girl for each birth.)
Find the ex
2. Two dice are rolled, and the total number of dots is recorded.
bility func
3. Three cards are drawn from a deck. The number of Queens are
13. P
counted.
4
4. Two names are drawn from a hat, signifying who should go pick
up pizza. Three of the names are on the swim team and two are
not. The number of swimmers selected is counted.
.3
Draw a histogram for each of the given exercises, and shade the region
hat gives the indicated probability. (See Example 1.)
.2
5. Exercise 1; P(x
2)
. Exercise 2; P(x
.1
11)
Exercise 3; P(at least one queen)
Exercise 4: P(fewer than two swimmers
I/](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F236cbe9f-8378-4072-848f-6d296914f439%2F08068ba5-2430-4e4b-a7a3-731f6830d6cd%2Frwx7wqa.jpeg&w=3840&q=75)
Transcribed Image Text:or fewer children. (Data from: gss.nore.org
3
2
0
*
.165
.258
.162
281
P(x)
Find the expected value for the number of children
Solution Using the formula for the expected val
Ex)= 0(.281) + 1(.162) +2(.258) 3(.165) +
1.804.
For those respondents with 7 or fewer childre
is 1.804
9.1 Exercises
12.
or each of the experiments described, let x determine a random vari-
hle and use your knowledge ofprobability to prepare a probability
distribution. (Hint: Use a tree diagram.)
5
xr
4
P(x)
1. Four children are born, and the number of boys is noted.
(Assume an equal chance of a boy or a girl for each birth.)
Find the ex
2. Two dice are rolled, and the total number of dots is recorded.
bility func
3. Three cards are drawn from a deck. The number of Queens are
13. P
counted.
4
4. Two names are drawn from a hat, signifying who should go pick
up pizza. Three of the names are on the swim team and two are
not. The number of swimmers selected is counted.
.3
Draw a histogram for each of the given exercises, and shade the region
hat gives the indicated probability. (See Example 1.)
.2
5. Exercise 1; P(x
2)
. Exercise 2; P(x
.1
11)
Exercise 3; P(at least one queen)
Exercise 4: P(fewer than two swimmers
I/
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