Answer:
6 inches
Step-by-step explanation:
The diameter of the burners are 6 inches because the diameter is twice the size of the radius.
Answer: The 90% confidence interval for the population mean μ is between 82.85 and 85.15,
Step-by-step explanation:
When population standard deviation is not given ,The confidence interval population proportion is given by (
):-
, where n= Sample size.
s= Sample standard deviation
= sample mean
t* = Critical t-value (Two-tailed)
As per given , we have
n= 64
Degree of freedom : df = n-1=63
s= 5.5
Significance level : 
Two-tailed T-value for df = 63 and
would be
(By t-distribution table)
i.e. t*= 1.669
The 90% confidence interval for the population mean μ would be

∴ The 90% confidence interval for the population mean μ is between 82.85 and 85.15,
Hope the answer I gave you helps!!!
:)
The answer is D
Divide the percent by 100
14/100=0.14
Simplify the fraction
14/100 simplified=7/50
3^2 = 9
3^4= 81
9 x 81 = 729
Your answer is 729 . Good luck (: