Answer:
The mean blood cholesterol level for the sample is 184mg/dl
Step-by-step explanation:
Hello!
When you construct any confidence interval for the mean, the general structure is "estimator±margin of error"
For example under a Z-distribution the formula is
X[bar]±
*(σ/√n)
So you subtract or add "*(σ/√n)" to the sample mean. In other words, this type of confidence interval is centered on the sample mean.
If the interval is already calculated, you just have to add both limits and divide by two to get the sample mean.
[166mg/dl;202mg/dl]
sample mean: x[bar]= (166+202) = 184mg/dl
2
I hope you have a SUPER day!
Answer:
none of the above
Step-by-step explanation:
Answer:
144°, 144°, 36°, 36°.
Step-by-step explanation:
Take shorter angle = x
Then the bigger angle = 4x (4 times the other angle)
In a parallelogram, there are 4 angles. Also, in a parallelogram opposite angles are equal to each other.
So,
1 angle = x
2 angle = 4x
3 angle = x
4 angle = 4x
The sum of all 4 angles in a parallelogram = 360°. So,
4x + x + 4x + x = 360°
10x = 360°
x = 360/10
x° = 36°
4x = 36 × 4 = 144°
Angles in the parallelogram = 144°, 144°, 36°, 36°.
Hope it helps ⚜
Answer:
Step-by-step explanation:
Here's the system graphed. Not sure what you meant by solution though, what are you trying to find?
