Statistics

Statistics

Chapter 3 Solutions Chapter 3 Review

Fill in the Blank

Practice Problems

1. 2. 3. 4.

Variable

1. 2. 3. 4.

= −0.5

Independent Dependent

= 5

̂ = 5 − 0.5

Random

̂ = 2.5 if

= 5

Chapter 3 Quiz

1. A

2. B

3. A

4. D

5. C

Chapter 4 Solutions Chapter 4 Review

Table

Practice Problems

Event

Probability Equation

1. 0.35 2. Yes, event A or B does not depend on the other event. There may be additional factors or events that influence turn out. dependent upon temperature which is independent. 3. The carnival is

( ) ( ′ )

0 ≤ ( ) ≤ 1 ( ′ ) = 1 − ( )

( ∪ ) Mutually

Mutually Exclusive ( ∪ ) = ( ) + ( ) Non-Mutually Exclusive ( ∪ ) = ( ) + ( ) − ( ∩ )

Exclusive and Non-Mutually Exclusive

Independent ( ∩ ) = ( ) × ( ) Dependent ( ∩ ) = ( ) × ( | )

( ∩ ) Independent and Dependent

( ∩ ) ( )

( | ) =

4.

( ∩ ) ( )

( | )

( | ) =

Chapter 4 Quiz

1.

A

2.

C

3.

A

4.

C

5.

A

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