Answer: z= -2.35
Step-by-step explanation:
When the population variation is know, then we calculate the z-statistic.
Formula to calculate the z-test statistic is given by :-
![z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B%5Coverline%7Bx%7D-%5Cmu%7D%7B%5Cdfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%7D)
where , n= sample size
= sample mean
= Population mean
=Population standard deviation.
As per given we have,
n= 270
![\mu= 108](https://tex.z-dn.net/?f=%5Cmu%3D%20108)
![\overline{x}=107](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%3D107)
![\sigma^2=49\\\\\Rightarrow \sigma=\sqrt{49}=7](https://tex.z-dn.net/?f=%5Csigma%5E2%3D49%5C%5C%5C%5C%5CRightarrow%20%5Csigma%3D%5Csqrt%7B49%7D%3D7)
Then, z-statistic will be
(Substitute all the values )
Hence, the value of the test statistic= z= -2.35
There are 4 foutains along the runnong trail
8/0 = undefined
Reason: You cannot have 8 parts of nothing, and so it is not possible.
hope this helps
<span>2 symbol and 6 set of representation then 2^6 becomes 64</span>