I think this would be the 2nd one
Answer:
The answer is below
Explanation:
The question is not complete, but I will solve a similar question. The question goes as:
A random sample of n measurements was selected from a population with unknown mean µ and known standard deviation σ. Calculate a 90% confidence interval for n = 49, ¯ x = 28, σ = 28
Solution:
A confidence interval is a range of numbers that contains a population parameter.
C = 90% = 0.9
α = 1 - C = 1 - 0.9 = 0.1
α/2 = 0.1/2 = 0.05
The z score of α/2 is the same as the z score 0.45 (0.5 - 0.05) which is equal to 1.65. Hence, the margin of error E is:
![E=z_\frac{\alpha}{2}*\frac{\sigma}{\sqrt{n} } =1.65*\frac{28}{\sqrt{49} } =6.6](https://tex.z-dn.net/?f=E%3Dz_%5Cfrac%7B%5Calpha%7D%7B2%7D%2A%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D%20%20%3D1.65%2A%5Cfrac%7B28%7D%7B%5Csqrt%7B49%7D%20%7D%20%3D6.6)
The confidence interval = ![\bar x \pm E=28 \pm 6.6 = (21.4,\ 34.6)](https://tex.z-dn.net/?f=%5Cbar%20x%20%5Cpm%20E%3D28%20%5Cpm%206.6%20%3D%20%2821.4%2C%5C%2034.6%29)
The 90% confidence is between 21.4 and 34.6.
Answer:i think it should be in the third person
Explanation:
I just remembered what i learned in 5th
Answer: D: The speaker is speaking to himself
Explanation: It says in the beginning of the poem "thou art a fool," Said My head to my heart." He is not speaking to Phyllis, he is speaking about Phyllis to himself.