On Coming Inside from the Cold,students Notice That Their Cheeks

question 77

Multiple Choice

On coming inside from the cold,students notice that their cheeks are red.This results from

• A)dilation of the blood vessels in the dermis of the cheeks.
• B)constriction of the blood vessels in the epidermis of the cheeks.
• C)increased permeability of superficial vessels.
• D)constriction of the sweat glands in the cheeks.
• E)damage to the epidermis by the cold.

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Definitions:

Normal Approximation

Normal approximation is a statistical technique that involves using the normal distribution to approximate the distribution of sample means or sums, especially useful for large sample sizes.

Standardized Test Statistic

A measure used in statistical hypothesis testing, indicating how far a sample statistic deviates from its null hypothesis expected value, typically expressed as a z-score.

Two-Tail Test

is a statistical test that considers extreme values in both tails of the distribution to test for a non-specific alternative hypothesis.

Wilcoxon Rank-Sum Test

A non-parametric statistical test used to compare two independent samples to assess whether their populations differ in terms of their central tendency.