Question
In: Statistics and Probability
In a fictional study, suppose that a psychologist is studying the effect of daily meditation on...
In a fictional study, suppose that a psychologist is studying the effect of daily meditation on resting heart rate. The psychologist believes the patients who not meditate have a higher resting heart rate. For a random sample of 45 pairs of identical twins, the psychologist randomly assigns one twin to one of two treatments. One twin in each pair meditates daily for one week, while the other twin does not meditate. At the end of the week, the psychologist measures the resting heart rate of each twin. Assume the mean resting heart rate is 80 heart beats per minute.
The psychologist conducts a T-test for the mean of the differences in resting heart rate of patients who do not meditate minus resting heart rate of patients who do meditate.
Which of the following is the correct null and alternative hypothesis for the psychologist’s study?
- H0: µ = 80; Ha: µ > 80
- H0: µ = 0; Ha: µ ≠ 0
- H0: µ = 0; Ha: µ > 0
Solutions
orchestra answered 2 years agoRelated Solutions
In a fictional study, suppose that a psychologist is studying the effect of daily meditation on...
In a fictional study, suppose that a psychologist is studying
the effect of daily meditation on resting heart rate. The
psychologist believes the patients who not meditate have a higher
resting heart rate. For a random sample of 45 pairs of identical
twins, the psychologist randomly assigns one twin to one of two
treatments. One twin in each pair meditates daily for one week,
while the other twin does not meditate. At the end of the week, the
psychologist measures...
An educational psychologist has developed a meditation technique to reduce anxiety. The psychologist selected a sample...
An educational psychologist has developed a meditation technique
to reduce anxiety. The psychologist selected a sample of high
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sessions a week apart. The participants' anxiety is measured the
week before the first session and at each subsequent session. Below
are the anxiety scores for the participants. What can the
psychologist conclude with an α of 0.01?
before
session 1
session 2
9
6
8
5
8
6
9...
An educational psychologist has developed a meditation technique to reduce anxiety. The psychologist selected a sample...
An educational psychologist has developed a meditation technique
to reduce anxiety. The psychologist selected a sample of high
anxiety students that are asked to do the meditation at two therapy
sessions a week apart. The participants' anxiety is measured the
week before the first session and at each subsequent session. Below
are the anxiety scores for the participants. What can the
psychologist conclude with α = 0.05?
before
session 1
session 2
9
6
8
2
8
6
9
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A cognitive psychologist studying motivation wants to determine if type of music has any effect on...
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