Contraction of Which Muscle Normally Accounts for Around 75% of the Air

question 51

Multiple Choice

Contraction of which muscle normally accounts for around 75% of the air movement in normal quiet breathing?

• A) diaphragm
• B) rectus abdominis
• C) internal intercostals
• D) external intercostals
• E) internal obliques

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Definitions:

T-statistic

A ratio used in hypothesis testing that compares the observed difference between sample mean and the population mean relative to the sample variability.

Sample Mean

The average of all the data points in a sample.

Z-statistic

The Z-statistic is a type of standard score that indicates how many standard deviations an element is from the mean, used in hypothesis testing for normal distributions.

Standard Error

A measure that describes the distribution of sample means around the population mean in a sampling distribution.