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3 years ago

Is (2,5) a solution to this system of equation

Mathematics

1 answer:

spayn [35]3 years ago

4 0

(2,5) is not a solution because 2(2)+2(5)=15 is not true.

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3 years ago

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P(A | B) is 2/10 = 0.2.

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Please find attached the complete question. To learn more about venn diagrams, please check: brainly.com/question/13192210

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3 years ago

Express each of the following in standard form 0.000000000221

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Answer:

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Step-by-step explanation:

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3 years ago

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Agata [3.3K]

Answer:

If the observed sample mean is greater than 17.07 minutes, then we would reject the null hypothesis.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 15 minutes

Sample size, n = 10

Alpha, α = 0.05

Population standard deviation, σ = 4 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 15\text{ minutes}\\H_A: \mu > 15\text{ minutes}$

Since the population standard deviation is given, we use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Now, $z_{critical} \text{ at 0.05 level of significance for one tail} = 1.64$

Thus, we would reject the null hypothesis if the z-statistic is greater than this critical value.

Thus, we can write:

$z_{stat} = \displaystyle\frac{\bar{x} - 15}{\frac{4}{\sqrt{10}} } > 1.64\\\\\bar{x} - 15>1.64\times \frac{4}{\sqrt{10}}\\\bar{x} - 15>2.07\\\bar{x} > 15+2.07\\\bar{x} > 17.07$

Thus, the decision rule would be if the observed sample mean is greater than 17.07 minutes, then we would reject the null hypothesis.

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4 years ago

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Hoochie [10]

Answer:

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Step-by-step explanation:

think about it if it says that the cylinder and a cone have the same base and altitude. it would be the same

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3 years ago