Problem 1 Identifying elements of a study and appropriate statistical inference
From January 5 to 7, 2015, Hart Research Associates conducted a national survey on the issue of the federal minimum
wage. Interviews were conducted online among a representative national sample of 1,002 adults.
answered the following question:
“Do you support raising the federal minimum wage to $15.00/hour over the next 5
The only options were "Support" and "Do not support".
survey results showed that 63% of those who
responded supported this proposal.
What kind of study is this?
Prospective longitudinal cohort
None of the above
What is the population parameter of interest?
What is the distribution of the individual-level outcome in the population?
What is the distribution of the combination of outcomes in the population?
What is the sample estimate of the
population parameter, and what is its
approximate sampling distribution?
(formula with expected value and
𝑝̂ ~ ? (𝑝,
𝑝(1 − 𝑝)
How do we define the sampling
distribution of the estimate for testing
the null hypothesis
: 𝑝 = 𝑝
(1 − 𝑝