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pychu [463]
3 years ago
9

Imagine you are surveying a population of a mountain range where the inhabitants live in the valleys with no inhabitants on the

large mountains between. If your sample area is the valleys, and you use this to estimate the population across the entire mountain range, will you overestimate or underestimate the actual population size?
Biology
1 answer:
Marta_Voda [28]3 years ago
6 0

Imagine you are surveying a population of a mountain range where the inhabitants live in the valleys with no inhabitants on the large mountains between. If your sample area is the valleys, and you use this to estimate the population across the entire mountain range, <u>you overestimate the actual population size</u>

<u />

Explanation:

  • An estimate that turns out to be incorrect will be an overestimate if the estimate exceeded the actual result, and an underestimate if the estimate fell short of the actual result.
  • The mean of the sampling distribution of a statistic is sometimes referred to as the expected value of the statistic. Therefore the sample mean is an unbiased estimate of μ.
  • Any given sample mean may underestimate or overestimate μ, but there is no systematic tendency for sample means to either under or overestimate μ.
  • Bias is the tendency of a statistic to overestimate or underestimate a parameter. Bias can seep into your results for a slew of reasons including sampling or measurement errors, or unrepresentative samples

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Cardiovascular effects of the sympathetic division include all of the following EXCEPT dilation of the blood vessels serving the skin and digestive viscera.

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a marine biologist dredges up a small animal from the bottom of the ocean. it is uniformly segmented, with short, stiff appendag
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Given the characteristics mentioned in the question, the animal must be an annelid.

<h3>What is an annelid?</h3>

Annelids, (Phylum name annelida) segmented worms, characterized by having body cavities (or body coelom), mobile bristles (or setae), and bodies segmented by transverse rings. The body cavity is reduced in leeches, and the bristles are devoid of some specialized morphology, including leeches. An important phylum of invertebrates in the animal kingdom, Annelida, consists of more than 9,000 species divided into three classes: Sea worms (polychaetes) are divided into motile and sedentary or tube-dwelling forms. earthworms (Oligochaeta); and leeches (Hildinea). Annelids are coelomic and tridermal.

General characteristics of annelids are:

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The answer is below

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