Answers to Friday's work

Chapter 14 #12a)
1. 0.45
2. 0.87

Chapter 14 #12b)
1. (0.55)^2 = 0.3025
2. (0.45)^2 = 0.2025
3. 1 - (0.87)^2 = 0.2431

Chapter 15 #8
a) P(male | cat) = 6/18 = 0.333
b) P(cat | female) = 12/28 = 0.429
c) P(female | dog) = 16/24

Chapter 15 #10
a) 0.62
b) 0.26/0.30 = 0.867
c) 0.12/0.62 = 0.194
d) 0.66

Chapter 15 #24
No! P(death penalty) = 62%, but P(dp | rep) = 26/30 = 86.7% and P(dp
| dem) = 12/36 = 33%, so party is clearly NOT independent of party!

Quiz on Monday!!!

Answers to Thursday's work

Ch. 15 #4:
a) 0.14
b) 0.23
c) 0.77

Ch. 15 #20
a) P(Canada | Mexico) = 0.04/0.09 = 0.444

b) No, 4% have been to both

c) No, P(Canada) = 18%, which does not equal part (a), above, so not
independent.

Friday HW

Ch. 14 #12, 21
Ch. 15 #8, 10, 15, 24

Start of 15

Ch. 15 #2, 4, 20

Chapter 15

We started chapter 15, but no homework yet.
Get those app's done tonight!!!

Tuesday HW

Ch. 3 #14
Ch. 14 #19, 20, 24, 25

Back from break!

Page 110 #24
Ch. 14 #11 and 14

The last 4 days before Thanksgiving

Tuesday:  Unit 3 Review, #23, 24, 29;  Article #6

Wednesday:  Crossword and flipbook

Thursday:  Test on Unit 3 (1 page multiple choice + normal, 2 experiments, 1 survey)

Friday:  Bias project: poster and presentation

down the river

We started a stratifying activity today. Make sure you find all four
means. We'll wrap it up tomorrow.

HW: Ch. 13 #9-15, 32, 34, 36; Ch. 12 #7, 9--Due Friday!

More design

HW: Ch. 13 #3-5, 28-30

More experiments

Read about observational studies: pages 246-247
Do: Ch. 13 #1, 2, 6, 26

See you Monday!

Work for Thursday night and Friday:
Ch. 13 #19-24