Answer:
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
![\alpha = \frac{1-0.95}{2} = 0.025](https://tex.z-dn.net/?f=%5Calpha%20%3D%20%5Cfrac%7B1-0.95%7D%7B2%7D%20%3D%200.025)
Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so ![z = 1.96](https://tex.z-dn.net/?f=z%20%3D%201.96)
Now, find M as such
![M = z*\frac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=M%20%3D%20z%2A%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
In which
is the standard deviation of the population and n is the size of the sample.
![M = 1.96*\frac{2}{\sqrt{4}}](https://tex.z-dn.net/?f=M%20%3D%201.96%2A%5Cfrac%7B2%7D%7B%5Csqrt%7B4%7D%7D)
The lower end of the interval is the sample mean subtracted by M. So it is 1000 - 1.96 = 998.04 mm
The upper end of the interval is the sample mean added to M. So it is 1000 + 1.96 = 1001.96 mm
Since MN forms a 180 degree angle, if you subtract 148.7 from 180, you get 31.3 degrees. This means angles L and N are both 31.3 degrees. Since the parallelogram is 360 degrees total, you subtract 62.6 to account for angles L and N. The remaining degrees unaccounted for are 297.4 degrees which you then divide by two to get the value of angles O and M, which would give you 148.7 degrees for each O and M. This means that angle x is 148.7 degrees
Answer:
13
Step-by-step explanation:
9/36=0.25
0.25*52 = 13
<h3>
<u>Answer:</u></h3>
![\large\boxed{\pink{\sf \leadsto He \ purchased \ the \ fan \ for \ Rs 700. }}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%5Cpink%7B%5Csf%20%5Cleadsto%20He%20%5C%20purchased%20%5C%20the%20%5C%20fan%20%5C%20for%20%5C%20Rs%20700.%20%7D%7D)
<h3>
<u>Step-by-step explanation:</u></h3>
Given that , a retailer makes a profit of 5% by selling a fan for Rs 735 . So let us take CP be x .
Now , here
Here we assumed CP to be x , and profit % is 5% . So , its SP will be
<h3>
<u>Hence</u><u> the</u><u> </u><u>CP</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>fan</u><u> </u><u> </u><u>was</u><u> </u><u>Rs</u><u> </u><u>7</u><u>0</u><u>0</u><u> </u><u>.</u></h3>
Answer:
D
when you look at it it is upside down so d is the right answer