2 years ago

Help me plz :)))))

Mathematics

1 answer:

Vika [28.1K]2 years ago

7 0

Answer:

2 3 1 3

Step-by-step explanation:

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What is the midpoint of the segment shown below (3,7) (2,-1)

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Answer:

( $\frac{5}{2}$ , 3)

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2 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.8 parts

Alexxandr [17]

Answer:

The value of the test statistic is $t = 2.67$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 7.8$

The alternate hypotesis is:

$H_{1} \neq 7.8$

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem, we have that:

$X = 8.2, \mu = 7.8, \sigma = 0.6, n = 16$

Then

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{8.2 - 7.8}{\frac{0.6}{\sqrt{16}}}$

$t = 2.67$

The value of the test statistic is $t = 2.67$

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2 years ago

Simplify please help

aleksandr82 [10.1K]

Answer:

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Which statement compares the two numbers correctly?

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Step-by-step explanation:

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Yanka [14]

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2 years ago

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Help me plz :))))) ​

Help me plz :)))))