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A Recent Study from the University of California, Berkeley, Suggests

question 58

Essay

A recent study from the University of California, Berkeley, suggests that compared to black Americans, white Americans are less likely to cross the race barrier in online dating. In a sample of 120 white men, 24 initiated contact with someone outside of their race, whereas in a similar sample of 90 black men, 36 initiated contact with someone outside of their race.
A) Specify the competing hypotheses to determine if the proportion of white Americans initiating a contact outside their race is exactly 10 percentage points lower than that of black Americans.
B) Find the critical value(s) of the test.
C) Calculate the value of the test statistic.
D) Make a conclusion at the 5% significance level.

Definitions:

Earmarks

Narrow, specially designated spending authorizations placed in broad legislation by senators and representatives for the purpose of providing benefits to firms and organizations within their constituencies. Earmarked projects are exempt from competitive bidding and normal evaluation procedures.

Authorized Expenditures

Expenditures that are officially approved or sanctioned by an authoritative body or individual, often within an organizational or governmental context.

Narrow Specifically

Focusing or specializing in a very specific or narrow area or topic.

Earmarks

Provisions within legislation that allocate funds for specific projects, often without proper review or competition.