V=4/3 x pi r cubed thats the ewuation for the volume of a sphere
Answer:
352
Step-by-step explanation:
8 x 6 x 8 = 384
384- (4 x 1 x 8)
384-32=352
<h2>
Answer with explanation:</h2>
The confidence interval for population mean is given by :-
(1)
, where
= sample mean
z* = critical value.
SE = standard error
and
,
= population standard deviation.
n= sample size.
As per given , we have


n= 15
It is known that ring diameter is normally distributed.
By z-table ,
The critical value for 95% confidence = z*= 1.96
A 99% two-sided confidence interval on the true mean piston diameter :
(using (1))

[Rounded to three decimal places]
∴ A 99% two-sided confidence interval on the true mean piston diameter = (74.020, 74.022)
By z-table ,
The critical value for 95% confidence = z*= 1.96
A 95% lower confidence bound on the true mean piston diameter:
(using (1))
[Rounded to three decimal places]
∴ A 95% lower confidence bound on the true mean piston diameter= 74.020
Answer:
he can buy 30
Step-by-step explanation:
21.62 divided by .78 = 30.0277777778,you dont have enough for 31
Answer:
5/8
Step-by-step explanation: