11. Consider the following probability model used to describe the weight (in ounces) of letters mailed from a local post office. 2 3 4 Weight (oz) Probability 5 1 .65 18 .12 .04 .01 What is the expected weight of a letter mailed from this post office?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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11. Consider the following probability model used to describe the weight (in ounces) of letters mailed from a
local post office.
Weight (oz)
Probability
3
1
.65
4
2
.18
5
.12
.04
.01
What is the expected weight of a letter mailed from this post office?
12. A player spins the spinner below. If they land on a 6 or a 12, he wins $10. If they land on an odd number,
they win $4. If they land on any other number, they win $0.
(a) Fill in the probability model below.
2
Outcome
Win
Win
Win
$0
$10
$4
Probability
(b) Find the expected value of the game.
O
11
&
12
2
7
6
y
31
O
(
Transcribed Image Text:11. Consider the following probability model used to describe the weight (in ounces) of letters mailed from a local post office. Weight (oz) Probability 3 1 .65 4 2 .18 5 .12 .04 .01 What is the expected weight of a letter mailed from this post office? 12. A player spins the spinner below. If they land on a 6 or a 12, he wins $10. If they land on an odd number, they win $4. If they land on any other number, they win $0. (a) Fill in the probability model below. 2 Outcome Win Win Win $0 $10 $4 Probability (b) Find the expected value of the game. O 11 & 12 2 7 6 y 31 O (
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