What amount of sampling error is acceptable in a national sample of 1500 to 3000 respondents?
a. 5 to 10 percentage points.
b. plus or minus 3 percentage points.
c. less than one percentage point.
d. plus or minus 5 percentage points.
Question 2
Despite their increased participation in the labor force, women are still
a. over-represented in higher status occupations.
b. over-represented in lower status occupations.
c. underrepresented in lower status occupations.
d. roughly equal to men in occupational prestige.
e. roughly equal to men in annual income.
Pacific Rim National Park, British Columbia
Sandia ear-plug-sized samplers hang poised to sample gases relevant to climate and weather.
Grevy's zebras in Samburu National Reserve.
A sample of reef biodiversity