A Researcher Wishes to Test Whether a Particular Diet Has

question 34

Essay

A researcher wishes to test whether a particular diet has an effect on blood pressure. The blood pressure of 25
randomly selected adults is measured. After one month on the diet, each person's blood pressure is again
measured. For 19 people, the second blood pressure reading was lower than the first, and for 6 people, the
second blood pressure reading was higher than the first. At the 0.01 significance level, test the claim that the diet
has an effect on blood pressure.

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Definitions:

Serotonin

A neurotransmitter that contributes to feelings of well-being and happiness, also involved in regulating mood, appetite, and sleep.

Dopamine

A neurotransmitter in the brain that plays a key role in reward, motivation, memory, attention, and even regulating body movements.

Acetylcholine

A neurotransmitter in both the peripheral and central nervous systems that plays crucial roles in the stimulation of muscle cells and in various aspects of cognitive function, including memory.

Endorphin

Endorphins are natural chemicals produced in the brain that help to reduce pain and boost happiness.