2 standard deviations contain 95% confidence. So thus you would have 4hrs in either direction. So the interval at which we could feel 95% confident is between 11-19hrs.
Answer:

Step-by-step explanation:
Given a function:

To find:
Function
whose graph is a reflection in the y -axis for the given function = ?
Solution:
First of all, let us learn about the reflection of a point (
) in y axis.
For example, let us consider a point (3, 2) on the coordinate axis.
The reflection of this point in y axis will be (-3, 2)
OR
In other words, <em>To find the image of a point in y axis</em>:
the x coordinate is made of negative sign and y coordinate remains the same.
A line is nothing but a number of points joined together.
So, if we want to find reflection of a line or linear function in y axis, we just make the sign of x as negative.
Given that 
We can write it as:

To find its reflection:

Please refer to the attached graphs of
and
.
So, the answer is:

Answer:
answer is 28 hope it helps
Step-by-step explanation:
got 100% on my quiz
Answer:
radius = length of one straight edge of one slice of pizza
minor arc = sum of the lengths of the curved edges of 1, 2, or 3 adjacent slices of pizza
diameter = length of 2 straight edges of 2 opposite slices of pizza
major arc = sum of the lengths of the curved edges of 5, 6 or 7 adjacent slices of pizza
semicircle = sum of 4 adjacent slices of pizza