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3 years ago

Find cordninates of the midpoint of the segment with each pair of endpoints

Mathematics

2 answers:

soldier1979 [14.2K]3 years ago

6 0

The answer is b hope this helped

vovangra [49]3 years ago

4 0

The answer is b (14,-7)

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Answer:

8 percent or .8

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3 years ago

Write the slope intercept form of a line that passes through (3, -2) and is 1 to y = x + 3.

zhuklara [117]

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3 years ago

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3 years ago

Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study wa

4vir4ik [10]

Using the z-distribution, it is found that since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

At the null hypothesis, it is tested if the mean length of jail time is still of 2.5 years, that is:

$H_0: \mu = 2.5$

At the alternative hypothesis, it is tested if it has increased, that is:

$H_1: \mu > 2.5$

We have the standard deviation for the population, thus, the z-distribution is used. The test statistic is given by:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.
$\mu$ is the value tested at the null hypothesis.
$\sigma$ is the standard deviation of the sample.
n is the sample size.

For this problem, the values of the parameters are: $\overline{x} = 3, \mu = 2.5, \sigma = 1.5, n = 26$

Hence, the value of the test statistic is:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{3 - 2.5}{\frac{1.5}{\sqrt{26}}}$

$z = 1.7$

The critical value for a right-tailed test, as we are testing if the mean is greater than a value, with a significance level of 0.05, is of $z^{\ast} = 1.645$

Since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

A similar problem is given at brainly.com/question/24166849

5 0

2 years ago

Need help with this question asap!!

Juli2301 [7.4K]

So I took the test and my teacher said to label all of the degrees so

angle 1,3,5,7,9,11,13,15 all = 95 degrees

angle 2,4,6,8,10,12,14,16 all = 85 degrees

I know 1 and 3 are vertical angles

3 and 8 are same side interior angle

4 and 14 alternate interior angles

6 and 12 are alternate exterior angles

13 and 9 are corresponding angles

4 and 7 are same side interior angles

I believe these are correct but you might want to double check with some other source

3 0

3 years ago