Answer:
And the best option would be:
D. (0.191 to 0.249)
Step-by-step explanation:
For this case we know that the mean is:
And the standard error is given by:
We want to construct a 68% confidence interval so then the significance level would be :
and 
. The confidence interval is given by:
Now we can find the critical value using the normal standard distribution and we got looking for a quantile who accumulate 0.16 of the area on each tail and we got:
And replacing we got:
And the best option would be:
D. (0.191 to 0.249)
Answer:
231 your welcome
Step-by-step explanation:
-2(3x - 9) + 5x = -10
-6x + 18 + 5x = -10
-6x + 5x = -10 - 18
-x = -28
x = 28 <===
<h2>
Answer:</h2><h2>Option (i), (iv) and (v) are correct</h2>
Step-by-step explanation:
Cylinder volume = 703 
, height = 18.5 cm
(i) Volume or area of the cylinder = 
The formula for the volume of a cyclinder can be applied to find the area of the base.
Option (i) is correct
(ii) Volume or area of the cylinder =
The volume should be divivded by height to get the area
Option (ii) is wrong
(iv) Area of the base = 
= 38
Option (iv) is correct
(iii) The radius of the cyclinder is half the height.
= 19 cm not 18.5 cm
Option (iii) is wrong
(v)Area of the base = = 38
Option (v) is correct
Step-by-step explanation:
x²=a²+b²
x=√6²+12²
x=√180
x=3√2v
y²=16²+12²
y=√400
y=20
