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umka21 [38]
3 years ago
14

An evaluation of the habitats of endangered salmon species was performed in Conservation Ecology (December 2003). The researcher

s identified 734 sites (habitats) for Chinook, coho, or steelhead salmon species in Oregon and assigned a habitat quality score to each site. (Scores range from 0 to 36 points, with lower scores indicating poorly maintained or degraded habitats.) The data are saved in the HABITAT file. Give your opinion on whether the habitat quality score is normally distributed.
Mathematics
1 answer:
adell [148]3 years ago
5 0

Answer: The habitat quality score will be normally distributed if at least 50% of the total sites are captured

Step-by-step explanation:

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RideAnS [48]

Answer:

You can solve by the formula of area of trapezium. This is h(a+b)/2.

54 = 6(8+b)/2

Thus b = 10cm.

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3

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If f(x) = 7x- 3 and g(x) = x2 - 4x- 8, find (f+ 9%).
zavuch27 [327]

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option D

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we have

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4 years ago
Compute the differential of surface area for the surface S described by the given parametrization.
AysviL [449]

With S parameterized by

\vec r(u,v)=\langle e^u\cos v,e^u\sin v,uv\rangle

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We have

\dfrac{\partial\vec r}{\partial u}=\langle e^u\cos v,e^u\sin v,v\rangle

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with cross product

\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}=\langle ue^u\sin v-ve^u\cos v,-ve^u\sin v-ue^u\cos v,e^{2u}\cos^2v+e^{2u}\sin^2v\rangle

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with magnitude

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So we have

\mathrm dS=\boxed{e^u\sqrt{u^2+v^2+e^{2u}}\,\mathrm du\,\mathrm dv}

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