Crafton Hills College

Philosophy 103: Introduction to Logic

Fall 2014

Homework #2

Due date: November 20

Chapter 8:

1.Exercise 9-3 #2

2.For the following claim, translate it into standard form (A, E, I or O,) and determine the three corresponding standard form claims. Then, assuming the truth value of the given claim, determine the truth values of as many of the other three corresponding claims as you can.

Unless you own a Ford you aren’t cool.

3.Find the claim described, and determine whether it is equivalent to the claim you began with:

Find the obverse of Only students with good grades are students who take the time to look at their notes for any worthwhile amount of time.

4.Exercise 9-21 #23

5.Exercise 9-21 #25

Chapter 10:

1. Decide if the following is (a) an analogical argument or (b) an inductive generalization:

Hiking and camping have this much in common: You can’t do either one without getting chewed up by mosquitoes. You hate hiking so you’ll hate camping too.

analogical argument
inductive generalization

2. Decide if the following is (a) an analogical argument or (b) an inductive generalization:

If you are thinking of renting your apartment to Warren, I recommend him. He always showed up at work on time; no doubt he will pay his rent on time.

analogical argument
inductive generalization

3. For the following argument, Identify (1) the sample, (2) the target, and (3) the property in question:

The teenagers around here are nuts! Did you see those two dudes playing chicken with their cars?

4. For the following argument, Identify (1) the sample, (2) the target, and (3) the property in question:

These days, most brands of chips don’t contain preservatives, so I doubt these chips contain preservatives.

Chapter 11:

1. What is the cause and what is the effect seen in the following passage:

Each time the car alarm goes off, she noticed the same homeless guy hanging around. She, of course, suspects he’s responsible.

2. What is the cause and what is the effect seen in the following passage:

Within eleven months of September 11, 2001, eleven men connected to bioterror and germ warfare died in strange and violent circumstances. Don’t tell me that’s coincidence!

3. Identify each pattern of reasoning as (a) relevant difference reasoning or (b) common thread reasoning

Your Suburban is hard to start. Mine starts right up. You always use Chevron; I use Texaco. You’d better switch to Texaco.

4. Identify each pattern of reasoning as (a) relevant difference reasoning or (b) common thread reasoning

The only thing that could possibly account for Clark and his two brothers al having winning lottery tickets is that all three had been blessed by the Reverend Dim Dome just the day before. I’m signing up for the Reverend’s brotherhood.