To Study the Effect of Soothing Music on a Person's

question 40

Multiple Choice

To study the effect of soothing music on a person's blood pressure, two random samples of 220 adults were taken.One sample (sample 1) listened to soothing music for 5 min prior to having their blood pressure taken, while the other sample (sample 2) sat in silence.From previous studies, it was found that both populations have a standard deviation of 39.18.The average systolic blood pressure from the music sample was 114.5.The average systolic blood pressure from the silent sample was 122.8.Construct a 98% confidence interval on the difference in population mean blood pressures (music - silent) .

• A) (-14.4448, -2.1552)
• B) (-17.9223, 1.3222)
• C) (-16.9903, 0.3903
• D) (-15.6219, -0.9781)

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Definitions:

Darwin

Charles Darwin, a 19th-century naturalist known for his contributions to the science of evolution and his theory of natural selection.

Population

The entire group about which the investigator wants to draw conclusions.

Traits

Characteristics or qualities that define an individual's personality or biological attributes.

Generation

The act of producing or creating something, or a group of individuals born and living at about the same time.