Complete Question
In a random sample of 13 microwave ovens, the mean repair cost was $90.00 and the standard deviation was $15.20. Using the standard normal distribution with the appropriate calculations for a standard deviation that is known, assume the population is normally distributed, find the margin of error and construct a 98% confidence interval for the population mean u. A 98% confidence interval using the t-distribution was (78.7,101.3). Compare the results. The margin of error of u is
Answer:
The value is ![E = 11.65](https://tex.z-dn.net/?f=E%20%3D%2011.65)
Step-by-step explanation:
From the question we are told that
The sample is ![n = 13](https://tex.z-dn.net/?f=n%20%20%3D%2013)
The sample mean is ![\= x = \$ 90](https://tex.z-dn.net/?f=%5C%3D%20x%20%20%3D%20%20%5C%24%2090)
The standard deviation is ![\sigma = \$ 15.20](https://tex.z-dn.net/?f=%5Csigma%20%3D%20%5C%24%2015.20)
The lower limit of the 98% confidence interval is ![a = 78.7](https://tex.z-dn.net/?f=a%20%3D%20%2078.7)
The upper limit of the 98% confidence interval is ![b = 101.3](https://tex.z-dn.net/?f=b%20%3D%20%20101.3)
Generally the margin of error is mathematically represented as
![E = \frac{b-a}{2}](https://tex.z-dn.net/?f=E%20%3D%20%5Cfrac%7Bb-a%7D%7B2%7D)
=> ![E = \frac{ 101.3 - 78 }{2}](https://tex.z-dn.net/?f=E%20%3D%20%5Cfrac%7B%20101.3%20-%2078%20%7D%7B2%7D)
=> ![E = 11.65](https://tex.z-dn.net/?f=E%20%3D%2011.65)
Answer:
Left to Right
-3
-1.5
- 3/4
2/8
4/3
2 1/2
Step-by-step explanation:
It is easy.
Just line them up.
Least to greatest.
I really hope that this helped.
You’re cool in my opinion
The answer is 35
Since they are supplementary they both equal 180 degrees.
(3x+10)+(2x-5)=180
Add them up
5x-5=180
Subtract 5 from both sides
5x=180-5
5x=175
Divide 5 from both sides
x=35.
Yes it is because 2 sides would be the legs while 1 side is the hyptonuese so in this case 4 is a leg and 14 and 17 is the hyptonuese