1. Quiz 2-3 Review
Day 2

2. Question #1
Yellowstone National Park surveyed a random sample of 1526 winter visitors to the park. They asked each person whether they owned, rented, or had never used a snowmobile. The participants were also asked if they belonged to an environmental organization to determine of there is an association between environmental club membership and snowmobile use for the population of visitors to Yellowstone National Park.

3. Question #2 Females Males Total Biology 205 185 390 Chemistry 240 250
Females
Males
Total
Biology
205
185
390
Chemistry
240
250
490
Physiology
160
140
300
605
575
1180
1) A female student taking biology.
2) A male student.
3) A biology student given she is female.
4) A male physiology student.
5) A student known to be enrolled in chemistry,
that is male.
6) A male chemistry student.

4. Drink Size
Season
Totals
Spring
Summer
Fall
Small 24 22 18 64
Medium 23 28 19 70
Large 27 29 74
Jumbo 16 21 33 81 98 99
278 #3
What percent of the responses were from respondents who favor small drinks?
What percent of those who order Large drinks prefer them in the fall?
What is the marginal distribution of Seasons?
4) Write a sentence or two about the conditional relative frequency distribution of the drink size among the Summer season.