Laughter is often called 'the best medicine' since studies have shown that laughter can reduce muscle tension and increase oxygen in blood. 90 subjects (18-34 years old) watched film dips designed to evoke laughter. During the laughing period, the researchers measured the heart rate (beats per minute) of each subject, with the following results: j = 73.5, s = 6. It is well known that the mean resting heart rate of adults is 71 beats per minute. Setup a hypothesis testing whether the true mean heart rate during laughter exceeds 71 beats per minute. Create an appropriate test at the alpha 0.05 level of significance.

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Laughter is often called 'the best medicine' since studies have shown that laughter can
reduce muscle tension and increase oxygen in blood. 90 subjects (18-34 years old)
watched film dlips designed to evoke laughter. During the laughing period, the
researchers measured the heart rate (beats per minute) of each subject, with the
following results: x = 73.5, s = 6. It is well known that the mean resting heart rate of
adults is 71 beats per minute. Setup a hypothesis testing whether the true mean heart
rate during laughter exceeds 71 beats per minute. Create an appropriate test at the
alpha 0.05 level of significance.
Transcribed Image Text:Laughter is often called 'the best medicine' since studies have shown that laughter can reduce muscle tension and increase oxygen in blood. 90 subjects (18-34 years old) watched film dlips designed to evoke laughter. During the laughing period, the researchers measured the heart rate (beats per minute) of each subject, with the following results: x = 73.5, s = 6. It is well known that the mean resting heart rate of adults is 71 beats per minute. Setup a hypothesis testing whether the true mean heart rate during laughter exceeds 71 beats per minute. Create an appropriate test at the alpha 0.05 level of significance.
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