Answer:
-58
Step-by-step explanation:
18÷9-4×15
2-4×15
2-60
-58
19.05*10 power 5
hope it helps
Answer:


The confidence interval of standard deviation is:
to 
Step-by-step explanation:
Given

See attachment for the formatted data
Solving (a): The mean
This is calculated as:

So, we have:




Solving (b): The standard deviation
This is calculated as:




--- approximated
Solving (c): 95% confidence interval of standard deviation
We have:

So:



Calculate the degree of freedom (df)



Determine the critical value at row
and columns
and 
So, we have:
---- at 
--- at 
So, the confidence interval of the standard deviation is:
to 
to 
to 
to 
Answer:
Step-by-step explanation:
Does it say what x and y equals
80,000,000 + 9,000,000 + 100,00 + 70,000 +300 + 20 + 6