Answer:
Volume = 125
Surface area = 150
Step-by-step explanation:
Volume = 5 x 5 x 5 = 125
Surface area = 6 x 5 x 5 = 150
<em>Hope that helps!</em>
<em>-Sabrina</em>
Answer:
$52.44
Step-by-step explanation:
The earths crust depth in kilometers is 6.4 kilometers I hoped this helped
Answer: (72.535, 76.665)
Step-by-step explanation:
The confidence interval for population mean is given by :-

, where
= population standard deviation.
n= Sample size
= sample mean.
= Critical z-value (two-tailed)
Given : 
n= 81

The critical values for 90% confidence interval : 
Now, the confidence interval for population mean would be :

Hence, a 90 percent confidence interval estimatefor the average score of all students. : (72.535, 76.665)