It’s seems to be the first one on the left!
Answer: 1.9166
Step-by-step explanation:
Let
be the population mean.
By considering the given description, we have
![\mu=75](https://tex.z-dn.net/?f=%5Cmu%3D75)
n=20
![\overline{x}=78](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%3D78)
s=7
Since, the population standard deviation is unknown , so we use t-test.
Test statistic : ![t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B%5Coverline%7Bx%7D-%5Cmu%7D%7B%5Cdfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%7D)
i.e . ![t=\dfrac{78-75}{\dfrac{7}{\sqrt{20}}}=1.916629695](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B78-75%7D%7B%5Cdfrac%7B7%7D%7B%5Csqrt%7B20%7D%7D%7D%3D1.916629695)
[Rounded to four decimal places.]
Hence, the value of the t-test statistic : 1.9166
Answer:
False.
Step-by-step explanation:
The word Premature means early or occurring before a usual time.
That wouldn’t lead to dehydration. It would make you go to the bathroom much more often.
Answer:
Graph x2 = 4y and state the vertex, focus, axis of symmetry, and directrix. ... this "algebraically" by rearranging the given equation into the conics form: ... picking y-values first and then finding the corresponding x-values for x = –y2 – 10y – 25: ... find the exact vertex, etc, I'll need to convert the equation to perfect-square form.
Step-by-step explanation: