#1.15) Iraq War Poll
a.) ALL the populations of the United States.
b.) The variable interest is to find out if the invasion of Iraq is justified and it’s a qualitative data cannot be measured by a numerical scale.
c.) 2,000 individuals
d.) Whether the population of the United States thinks the invasion of Iraq was justified.
e.) Random-digit telephone dialing.
f.) The most common way to satisfy the representative sample requirement is to select a random sample.

#1.18) Extinct birds. Quantitative data =involves with numbers. & Ratio or Interval Qualitative data = no numbers & categories. & Ordinal or Nominal
a.) Qualitative data – Nominal
b.) Qualitative data – Nominal
c.) Qualitative data – Nominal
d.) Qualitative data – Ordinal
e.) Qualitative data – Nominal
f.) Quantitative data – Ratio
g.) Quantitative data – Ratio
h.) Qualitative data – Nominal

#1.24) Gallup poll of teenagers.
a.) The sampling of 505 teenagers selected of all the U.S. teenager’s populations.
b.) ALL the populations of teenagers in the United States
c.) Yes, the survey randomly selected 505 teenagers from all U.S. teenagers.
d.) The variable interest is to determine the topics that teenagers most want to discuss with their parents.
e.) The inference is expressed by applying the results of the sample to general populations of teenagers in the United States.
f.) The purpose of the margin of error is to safeguard the results of the random sampling because it’s representative a whole population. Its interpretation is to have self-assurance in the results and having validations.

#1.27) Blood loss in burn patients.
a.) The data collection method is designed experiment. With 14 burn patients, half receiving drugs and half a placebo.
b.) The study involves an inferential statistics because from the analysis of data they can determine that half of the patients on