Answer:
[293.21;372.28]
Step-by-step explanation:
Hello!
You are asked to construct a 90% Confidence Interval for the mean duration of the foreclosure process in Boston.
The Study variable is X: duration of foreclosure in Boston. X≈N(μ;σ²)
Sample n=8
To study the population sample you can use either a Z or a t-statistic. Since the sample is less than 10, I'll choose a Student t-statistic, because it is more potent with small samples than the Z, but either one is a good choice.
X[bar]= 332.75
S= 59.01
![X[bar] ± t_{n-1; 1-\alpha /2}*\frac{S}{\sqrt{n} }](https://tex.z-dn.net/?f=X%5Bbar%5D%20%C2%B1%20t_%7Bn-1%3B%201-%5Calpha%20%2F2%7D%2A%5Cfrac%7BS%7D%7B%5Csqrt%7Bn%7D%20%7D)
![332.75 ± 1.895*\frac{59,01}{\sqrt{8} }](https://tex.z-dn.net/?f=332.75%20%C2%B1%201.895%2A%5Cfrac%7B59%2C01%7D%7B%5Csqrt%7B8%7D%20%7D)
[293.21;372.28]
With a confidence level of 90% you'd expect the interval [293.21;372.28] to contain the population mean of the duration of the foreclosure process in Boston.
I hope you have a SUPER day!
There are seven digits in the number 6666666. With commas separating the values, it would be 6,666,666, which is six million six hundred sixty six thousand six hundred sixty six.
Answer:The answer I’m getting is C. Maybe wait till someone also answers you. I don’t wanna give you a wrong answer
Step-by-step explanation:
Answer:
y = 4x-2
Step-by-step explanation:
y = mx+b
y = 4x+b
y = 4x-2
Answer:
c = (d-ba) /a
Step-by-step explanation:
a(c + b) = d
Divide each side by a
a/a(c + b) = d/a
c+b = d/a
Subtract b
c = d/a -b
Get a common denominator
c =d/a - ba/a
c = (d-ba) /a