All categories

3 years ago

Find the slope. (-4, 10) (8, - 2)

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Answer:

is the slop in slope intercept form2=-2x

Step-by-step explanation:

-2--4

8- 10

2=-2x

You might be interested in

A production line operates with a mean filling weight of 16 ounces per container. Overfilling or underfilling presents a serious

Dominik [7]

Answer:

Part1) $z=\frac{16.32-16}{\frac{0.8}{\sqrt{30}}}=2.191$

$p_v =2*P(Z>2.191)=0.0284$

Readjustment is needed

Part 2) $z=\frac{15.82-16}{\frac{0.8}{\sqrt{30}}}=-1.232$

$z=\frac{15.82-16}{\frac{0.8}{\sqrt{30}}}=-1.232$

$p_v =2*P(Z$

No readjustment is needed

Step-by-step explanation:

Data given and notation

Part 1

$\bar X=16.32$ represent the sample mean

$\sigma=0.8$ represent the population standard deviation

$n=30$ sample size

$\mu_o =16$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to apply a two tailed test.

What are H0 and Ha for this study?

Null hypothesis: $\mu =16$

Alternative hypothesis : $\mu \neq 16$

Compute the test statistic

The statistic for this case is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{16.32-16}{\frac{0.8}{\sqrt{30}}}=2.191$

Give the appropriate conclusion for the test

Since is a two tailed test the p value would be:

$p_v =2*P(Z>2.191)=0.0284$

Using the value of $\alpha =0.05$ we see that $pv$ and we have enough evidence to reject the null hypothesis.

Readjustment is needed

The rejection zone is given by:

$(-\infty ;-1.96) , (1.96;\infty)$

Part 2

$\bar X=15.82$ represent the sample mean

We can replace in formula (1) the info given like this:

$z=\frac{15.82-16}{\frac{0.8}{\sqrt{30}}}=-1.232$

Give the appropriate conclusion for the test

Since is a two tailed test the p value would be:

$p_v =2*P(Z$

Using the value of $\alpha =0.05$ we see that $pv>\alpha$ and we have enough evidence to FAIL to reject the null hypothesis.

No readjustment is needed

The rejection zone is given by:

$(-\infty ;-1.96) , (1.96;\infty)$

What action would you recommend ?

Review the procedure.

Do you reach the same conclusion ?

No we got different conclusions

5 0

4 years ago

Sebastian grew 21-3 inches each year for the past 3 years. How many inches total has Sebastian grown in the past 3 years?

Rainbow [258]

Answer:

the Answer is 21.3 x 3

Step-by-step explanation:

inches that grew each year for the past 3 years - 21.3

SO here 1 year = 21.3 inches

and it is asked about 3 years so we have to multiply 21.3 inches x 3 times ( 3 years).

8 0

3 years ago

Which terms are demonstrated in the figure below? Select ALL that apply.

Lilit [14]

Hello !

Following terms are demonstrated in the figure provided :

- angle
- parallel lines
- line segment
- perpendicular lines

I hope it helped you ?
Feel free to ask any query related to it !

5 0

4 years ago

Name a number between 2.65 and 2.66. Explain how you get your answer. ..

Marianna [84]

<span>The 2 given numbers are 2.65 and 2.66
x = number between the given numbers

in a number line, 2.655 is the number in between both numbers.

- 2.65 – 2.651 – 2.652 – 2.653 – 2.654 – 2.655 – 2.656 – 2.657 – 2.658 – 2.659 – 2.66 -
Notice the given number line illustration, the midpoint of 2.65 and 2.66 numbers is 2.655.

Therefore, x = 2.655</span>

8 0

4 years ago

50 US states for the namethat start with the letter W what percent of US states have the names that start with the letter W

Vanyuwa [196]

Washington, West Virginia, Wisconsin, Wyoming
Four states out of 50
4 / 50 * 100 = 8 per cent.

3 0

3 years ago