Nathan VanHoudnos

10/10/2014

- Homework comments
- Checkpoint #9 results
- Lecture 8 (covers pp. 100-111)

Homework 3

- was released on Wednesday, and
- does not include any R.

Please follow the standard process for Knitting and handing in your homework through Blackboard.

Your solutions should include **both symbols and English words** explaining those symbols.

**follow**the exmample of these slides.**do not**simply show the symbols.

- Homework comments
- Checkpoint #9 results
- Lecture 8 (covers pp. 100-111)

- 67 of 76 students
- 75% correct

**Bottom third**: completed between 0 and 33% of the activities.

**Middle third**: 34% to 95%

**Top third**: 95% to 100%

According to the information that comes with a certain prescription drug, when taking this drug, there is a 20% chance of experiencing nausea (N) and a 50% chance of experiencing decreased sexual drive (D). The information also states that there is a 15% chance of experiencing both side effects.

What is the probability of

- experiencing nausea or a decrease in sexual drive?
- experiencing only nausea?
- experiencing neither of these side effects?

Make a Venn Diagram:

Recall:

20% chance of experiencing nausea (N), 50% chance of decreased sexual drive (D), and a 15% of both.

What is the probability of

- experiencing nausea or a decrease in sexual drive?
- experiencing only nausea?
- experiencing neither of these side effects?

20% chance of experiencing nausea (N), 50% chance of decreased sexual drive (D), and a 15% of both.

Fill in the given information:

```
| D | not D | Total
------|------|-------|------
N | 0.15 | | 0.20
------|------|-------|------
not N | | |
------|------|-------|------
Total | 0.50 | | 1
```

20% chance of experiencing nausea (N), 50% chance of decreased sexual drive (D), and a 15% of both.

Figure out the rest:

```
| D | not D | Total
------|------|-------|------
N | 0.15 | | 0.20
------|------|-------|------
not N | | | 0.80
------|------|-------|------
Total | 0.50 | 0.50 | 1
```

20% chance of experiencing nausea (N), 50% chance of decreased sexual drive (D), and a 15% of both.

Figure out the rest:

```
| D | not D | Total
------|------|-------|------
N | 0.15 | 0.05 | 0.20
------|------|-------|------
not N | 0.35 | 0.45 | 0.80
------|------|-------|------
Total | 0.50 | 0.50 | 1
```

**Venn Diagram**

**Table**

```
| D |not D|Tot.
-----|----|-----|----
N | .15| .05 | .20
-----|----|-----|----
not N| .35| .45 | .80
-----|----|-----|----
Total| .50| .50 | 1
```

**Table**

```
| D |not D|Tot.
-----|----|-----|----
N | .15| .05 | .20
-----|----|-----|----
not N| .35| .45 | .80
-----|----|-----|----
Total| .50| .50 | 1
```

What is the prob. of

- experiencing nausea or a decrease in sexual drive?
- experiencing only nausea?
- experiencing neither of these side effects?

- Homework comments
- Checkpoint #9 results
- Lecture 8 (covers pp. 100-111)

All the students in a certain high school were surveyed, then classified according to gender and whether they had either of their ears pierced: