A Group of People Received the Same Treatment

question 36

Multiple Choice

A group of people received the same treatment. Then the members of the initial group were randomly assigned to two new groups. Would the proportion of success be the same for the two groups? The variable represents the observed proportion for the group 1 and the variable represents the observed proportion for the group 2. What does it mean when the ? ​

• A)The observed proportion of success would necessarily be the same for these groups.The value represents the null hypothesis, which is not rejected.There is not convincing evidence the treatment proportions are different.​
• B)The observed proportion wouldn't necessarily be the same for these groups.The value represents the null hypothesis, which is rejected.There is a convincing evidence that the proportion for the group 1 is greater than the proportion for the group 2.
• C)The observed proportion wouldn't necessarily be the same for these groups.The value represents the null hypothesis, which is rejected.There is a convincing evidence that the proportion for the group 2 is greater than the proportion for the group 1.
• D)​ a. The observed proportion of success would necessarily be the same for these groups. The value p₁-p₂=0 represents the null hypothesis, which is not rejected. There is not convincing evidence the treatment proportions are different.

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Definitions:

Sleep Cycles

The patterns of alternating REM (rapid eye movement) and NREM (non-rapid eye movement) sleep stages that occur throughout a typical night.

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A form of silent mantra meditation aimed at achieving peace, relaxation, and self-development.

Biofeedback Therapy

A therapeutic technique that teaches individuals to control physiological processes, such as heart rate and muscle tension, through real-time feedback.

Mantras

Sacred utterances, sounds, or phrases in Sanskrit believed to have spiritual or psychological power, often used in meditation.