Answer:
I think this ans may help you
Answer:
diameter = 16cm, circumference ≈ 50.27
Step-by-step explanation:
The radius is 8 centimeters, so the diameter should be twice of that because the radius is the distance from the middle of the circle to the edge while the diameter is from edge to edge passing through the middle of the circle. Therefore,
8 · 2 = 16cm
The equation for the circumference of a circle is 2πr. In this case, because nothing else is specified about π, we use 3.14. So,
2 · 3.14 · 8 ≈ 50.27
Hope this helped! Have a great day. ^^
Answer:
The critical t-value for such a test given an alpha level of 0.05 is 2.26
Step-by-step explanation:
Null hypothesis : 
Alternate hypothesis :
Population mean = 
Data : 10, 9, 6, 11, 13, 14, 9, 9, 9, and 10
Mean = 
Mean =
Mean =10
Standard deviation : 
Standard deviation :
Standard deviation s :2.144

Df = n-1 = 10-1 = 9
T critical =
T calculated > T critical
So, We failed to accept null hypothesis
Hence the critical t-value for such a test given an alpha level of 0.05 is 2.26
Answer:
2128.5
Step-by-step explanation:
maybe this is the answer, i used calculator