Energy Drink Consumption a Researcher at the University of Washington

question 42

Essay

Energy Drink Consumption A researcher at the University of Washington medical school believes that energy drink consumption may increase heart rate. Suppose it is known that heart rate (in beats per minute)is normally distributed with an average of 70 bpm for adults. A random sample of 25 adults was selected and it was found that their average heartbeat was 73 bpm after energy drink consumption, with a standard deviation of 7 bpm. {Energy Drink Consumption Narrative} Formulate the null and alternative hypotheses.

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Definitions:

Normal Distribution

A bell-shaped distribution characterized by its mean and standard deviation, where the mean, median, and mode are all equal.

Normally Distributed

Refers to a distribution that follows the normal (bell-curve) shape, characterized by a symmetric shape around the mean, indicating random variables with equal mean, median, and mode.

Spearman Rank

A nonparametric measure of rank correlation that assesses how well the relationship between two variables can be described using a monotonic function.

Ordinal Variables

Variables that represent categories with a natural order or ranking among them, though the intervals between the rankings may not be equal.