Answer:
(48.106 ; 53.494)
Step-by-step explanation:
Given the data:
X : 52 48 49 52 53
Sample mean = ΣX / n
n = 5
Sample mean, xbar = 254 / 5 = 50.8
Standard deviation, s = 2.17 (using calculator)
The standard error (SE) : s/√n =2.17/√5 = 0.970
The degree of freedom, df = n-1
df = 5 - 1 = 4
Tscore(0.05, 4) = 2.776
Confidence interval :
Xbar ± Tscore*standard error
50.8 ± (2.776 * 0.970)
50.8 ± 2.694
Lower boundary = 50.8 - 2.694 = 48.106
Upper boundary = 50.8 + 2.694 = 53.494
(48.106 ; 53.494)
Answer:
416
Step-by-step explanation:
since this is a trapezoid, you would calculate the area by the formula
(a+b
)h/2 where h is the height and a and b are the 2 bases
When you plug the values in you get the answer as 416
Hope this Helps!
Answer:
Can you take a picture of the question so i could help!
Step-by-step explanation:
Answer:2.35294117647 or 2.3
Just do 40/17
2 or 3 I would say... hope that helps : )
