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

question 15

Essay

A recent study from the University of California, Berkeley, suggests that, compared to white Americans, black Americans are more likely to cross the race barrier in online dating. In a sample of 120 white men, 24 initiated contact with someone outside their race, whereas in a similar sample of 90 black men, 36 initiated contact with someone outside their race.
A) Specify the hypotheses to justify the suggestion.
B) Find the critical value(s) of the appropriate test at the 1% significance level.
C) Calculate the value of the test statistic.
D) Make a conclusion at the 1% significance level.

• A) Specify the hypotheses to justify the suggestion.
• B) Find the critical value(s) of the appropriate test at the 1% significance level.
• C) Calculate the value of the test statistic.
• D) Make a conclusion at the 1% significance level.

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Definitions:

Interneurons

Neurons that transmit impulses between other neurons, especially as part of reflex arcs in the nervous system.

Endorphins

Natural pain-relieving peptides produced by the brain that also enhance feelings of pleasure.

Parasympathetic Nervous System

Part of the autonomic nervous system responsible for conserving energy and slowing the heart rate, facilitating a state of calm and relaxation.

Somatic Nervous System

The part of the peripheral nervous system that controls voluntary movements of the body and transmits sensory information.