A Person Running in Place on an Exercise Machine for 10

question 440

Multiple Choice

A person running in place on an exercise machine for 10 min uses up 17 kcal (food calories) . Another person exercises by repeatedly lifting two 2.5-kg weights a distance of 50 cm. How many
Repetitions of this exercise are equivalent to 10 minutes of running in place? Assume that the
Person uses negligible energy in letting down the weights after each lift. (1 cal = 4.186 J)

• A) 1500
• B) 2900
• C) 2200
• D) 1450
• E) 730

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Definitions:

Type I Error

The incorrect rejection of a true null hypothesis, also known as a "false positive" in statistical testing.

Measurement Error

Refers to the difference between the true value of a measurement and the recorded value due to various factors such as instrument error or human error.

T-tests

Statistical tests used to compare the means of two groups and determine if they are significantly different from each other.

Statistically Different

Being statistically different means that observed differences between groups or variables in a study are unlikely to have occurred by chance, according to statistical analysis. This distinction supports the idea that the observed effects reflect true differences in the populations being studied.