Answer:
Step-by-step explanation:
Step 1
Find the radius of the circular cross section
we know that
The circumference is equal to
we have
substitute and solve for r
simplify
Step 2
Find the area of the circular cross section
The area of the circle is equal to
we have
substitute
To calculate the z-statistic, we must first calculate the
standard error.
Standard error is standard deviation divided by the square
root of the population. In this case, it is equal to 2.68.
The z-score is defined the distance from the sample to the
population mean in units of standard error.
z = (195 – 208)/2.68 = -4.86
Add all the numbers inside the shape
Answer:
Step-by-step explanation:
um it’s your homework so do it
