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Sphinxa [80]
3 years ago
5

Please help me! For which I do not understand how to do this..

Mathematics
2 answers:
katovenus [111]3 years ago
6 0
What is the main question asking you about the number line?
SVEN [57.7K]3 years ago
6 0
Mark it between -1.5 and -1 & between 1 and 1.5
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The weight of a product is normally distributed with a mean of four ounces and a variance of .25 squared ounces. What is the pro
ololo11 [35]

Answer:

P(X>3.75)=P(\frac{X-\mu}{\sigma}>\frac{3.75-\mu}{\sigma})=P(Z>\frac{3.75-4}{0.5})=P(z>-0.5)

And we can find this probability using the complement rule and we got:

P(z>-0.5)=1-P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(4,\sqrt{0.25}=0.5)  

Where \mu=4 and \sigma=0.5

We are interested on this probability

P(X>3.75)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>3.75)=P(\frac{X-\mu}{\sigma}>\frac{3.75-\mu}{\sigma})=P(Z>\frac{3.75-4}{0.5})=P(z>-0.5)

And we can find this probability using the complement rule and we got:

P(z>-0.5)=1-P(z

5 0
3 years ago
Solve the equation.<br> -9x + 1 = -x + 17
ddd [48]

Answer:

The value of x:

x = -2

Step-by-step explanation:

Find the value of x:

-9x + 1 = -x + 17

-Add both sides by x:

-9x + 1 + x = -x + x + 17

-8x + 1 = 17

-Subtract both sides by 1:

-8x + 1 - 1 = 17 - 1

-8x = 16

Divide both sides by -8:

\frac{-8x}{-8} = \frac{16}{-8}

x = -2

So, the final answer would be x = -2 .

4 0
3 years ago
Read 2 more answers
What is the measure of ∠E?
Inessa [10]
This is a quadrilateral, so the sum of interior angle measures, like a rectangle or square ( who’s interior angle measures are4 x 90) —— is 360

So ...
E + 89 + 130 + 90 = 360
E + 309 = 360
- 309 - 309
E = 51 degrees
7 0
3 years ago
A parallelogram is shown below. Which equation best represents the formula for the area of the parallelogram?
adell [148]

The area of a parallelogram is length x height.

The answer would be C. A = 12 • 8

7 0
3 years ago
Multiply. Do not round your answer.<br><br> 6.9 × 1.221 = <br><br><br> Thanks :D
Ann [662]

Answer:

8.4249 ur answer....

hope it helps

6 0
3 years ago
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