1. Homework 1.1 Answers Intro Stats
1.) A Sample is a part of the population
2.) It is usually too hard, time-consuming, and expensive to get the data from ALL objects
3.) A Parameter describes the population.
A Statistic describes the sample.
4.) Descriptive and Inferential

2. 12.) Sample – it is every fourth person
11.) Population – all members of House of Representatives
12.) Sample – it is every fourth person
13) Sample – you are only asking a portion of all the spectators
14.) Population – you would ask each lawyer
15) Sample - you are only asking a portion of the total patients
16.) Population – you would ask each household

3. 22.) Population: ALL infants in Italy Sample: 33,043 infants in Italy
24.) Population: ALL computer users Sample: 1000 computer users
26.) Population: ALL students at a college Sample: 496 students at a college
28.) Population: ALL vacationers from the US Sample: 791 vacations from the US

4. 30.) Statistics; it is a sample
32.) Parameter; it is all the governors
34.) Parameter; it is all new magazines
36.) Parameter; it is all graduates
38.) Descriptive statistic: Spend at least $2000 for their next vacation.
Inferential statistic: People in the United States are planning to spend a lot (or little) on their next vacation.