Every two weeks, a solar panel company selects fifty of their modules and measures thelr power output. The most recent test gave an average of 320 watts, with a 95% confidence Interval of [315, 325]. If they don't update thelr manufacturing
process or design, about how many times a year will a sample have an average power outside this range?
A. 1
B. 3
C. 5
D. 10

i do not know the answer i am sorry

you would need to know all the numbers that are on there

step-by-step explanation:

okay..i will pick 8!

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet