Geography College

. Please calculate the confidence interval based on the conditions below

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Answer 1

With 90% confidence, we can say that the true population mean is between 11.448 miles and 12.552 miles.

How to explain the confidence interval

Confidence interval = sample mean ± margin of error

The margin of error is determined by the sample size, the standard deviation, and the level of confidence.

Standard error = population standard deviation / √sample size

Standard error = 3 / √80 ≈ 0.3354

Confidence interval = sample mean ± margin of error

Confidence interval = 12 ± 0.552

Confidence interval = (11.448, 12.552)

Therefore, with 90% confidence, we can say that the true population mean is between 11.448 miles and 12.552 miles.

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Related Questions

outline the negative impact of drought on the farmers of South Africa

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Answer: attach an image to help

Explanation:

is The loss of natural habitat for animals and insects cost or benefit

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The loss of natural habitat for animals and insects is cost because it is like a danger to the ecosystem .

What is the effect of habitat loss?

Habitat loss, can be described as the removal of plants as well as the trees that helps in the process of the stabilizatio of the soil, which bring about the increase in the erosion, as well as fading away the nutrient levels in terrestrial ecosystems.

It should be noted that this can bring about the decrease agricultural productivity. and can bring about the biodiversity as well as negatively impact the ecosystem

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Look at the description of the Sherburne. How was the distance to/ from the shore of the sea changing in the area as the Sherburne was being deposited?
Why are there no fossil ferns or primitive pine trees

Answer from your tutor:

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The Sherburne formation is starting to become sandier the closer you get to the top because the shore is starting to transition to sandstone.

How did the distance to/from the shore change as Sherburne was deposited?

The Sherburne formation refers to sequence of sedimentary rocks that was deposited in the Late Cretaceous period in what is now Montana and Wyoming which is thought to have been deposited in a shallow marine environment with the shoreline fluctuating over time.

As the Sherburne was being deposited, the distance to/from the shore of the sea was changing in the area. At the bottom of the formation, the sediment is composed of finer-grained rocks such as shale and mudstone which indicate a more offshore environment.

But as you move up the formation, the sediment becomes coarser with the sandstone and conglomerate becoming more prevalent which suggests that the shoreline was moving closer and the area was becoming shallower.

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There are two reasons that a lunar eclipse cannot be photographed every time the Earth is between the Sun and the moon. One concerns the shadow and the other concerns the orbit of the moon around Earth. This graphic gives a decent summary

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