The value of the expression -|a-b| when a=7and b = -3 is
2 answers:
You might be interested in
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
