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Volgvan
3 years ago
13

Evaluate the expression 3⋅f(−4)−3⋅g(−2)

Mathematics
1 answer:
wel3 years ago
3 0

Answer:

-6g

Step-by-step explanation:

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A company makes a profit of $5.8 million. This is $1.2 million
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I think last year, the company's profit was 2.3 million $

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5.8 - 1.2 = 4.6

4.6 divided by 2 = 2.3

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In a sample of 679 new websites registered on the Internet, 42 were anonymous (i.e., they shielded their name and contact inform
Semmy [17]

Answer:

95% Confidence interval:  (0.0429,0.0791)      

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 679

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\hat{p} = \dfrac{x}{n} = \dfrac{42}{679} = 0.0618

95% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

Putting the values, we get:

0.0618\pm 1.96(\sqrt{\dfrac{0.0618(1-0.0618)}{679}}) = 0.0618\pm 0.0181\\\\=(0.0429,0.0791)

is the required confidence interval for proportion of all new websites that were anonymous.

8 0
3 years ago
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