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gladu [14]
2 years ago
13

The charitable foundation for a large metropolitan hospital is conducting a study to characterize its donor base. In the past, m

ost donations have come from relatively wealthy individuals; the average annual donor income in the most recent survey was right at $100,000. The foundation believes the average has now increased. A random sample of 200 current donors showed a mean annual income of $103,157 and a standard deviation of $27,498. To perform this study, we should form a null hypothesis stating that the average is
Mathematics
1 answer:
In-s [12.5K]2 years ago
8 0

Answer:

The null hypothesis will be that the average annual donor income is less or equal to $ 100,000

Step-by-step explanation:

The claim is mostly treated as alternate hypothesis .

In this question the claim is given as the average annual donor income has increased therefore it is written as

Ha: u > 100,000

The null hypothesis is reverse of the alternate hypothesis

H0: u ≤ 100,000

The null hypothesis will be that the average annual donor income is less or equal to $ 100,000

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Answer:

1,546 ≈ 2,000

Hope this helps :)

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Yuliya22 [10]

Answer:

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B.) g'(x) = 2

Step-by-step explanation:

A.) The two given functions are:

f(x) = (x + 2)^2 and g(x) = 3(x - 1)

Open the bracket of the two functions

f(x) = (x + 2)^2

f(x) = x^2 + 2x + 2x + 4

f(x) = x^2 + 4x + 4

and

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To find gf(x), substitute f(x) for x in g(x)

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To find g'(x), let g(x) be equal to y. Then, interchange y and x for each other and make y the subject of formula

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Therefore, g'(x) = x/3 - 1

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62

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this is because 62 might be 100%

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