2 years ago

What’s the domain and range of this graph ? PLEASE HELP URGENT

Mathematics

1 answer:

Musya8 [376]2 years ago

8 0

Step-by-step explanation:

Domain -5 range 5 ,...............

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Paladinen [302]

Answer:

240

Step-by-step explanation:

12/100 X 2000

=240

the answer is 240

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3 years ago

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DaniilM [7]

Answer:

6 1/8 ×10 2/7= 60

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The answer:

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3 years ago

In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead. Construct 90% confiden

hram777 [196]

Answer:

(0.4958, 0.7422)

Step-by-step explanation:

Let p be the true proportion of water specimens that contain detectable levels of lead. The point estimate for p is $\hat{p}=26/42=0.6190$ . The estimated standard deviation is given by $\sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{(0.6190)(1-0.6190)/42}=0.0749$ . Because we have a large sample, the 90% confidence interval for p is given by $0.6190\pm z_{0.05}0.0749$ where $z_{0.05}=1.6448$ is the value that satisfies that above this and under the standard normal density there is an area of 0.05. So, the confidence interval is $0.6190\pm (1.6448)(0.0749)$ , i.e., (0.4958, 0.7422).