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.

• 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:

Electron Transport Chain

A series of protein complexes and other molecules that transfer electrons from electron donors to electron acceptors via redox reactions and generate ATP in the process.

Decarboxylation

A reaction in which a molecule of CO2 is removed from a carboxyl group of an organic acid.

Carboxyl Group

A functional group consisting of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group (-COOH), present in organic acids.

Coenzyme Q

A fat-soluble substance found in the mitochondria, essential for the production of energy in cells, and functions as an antioxidant.