Google it please!!!!!!!!!
Answer:
We can find the critical value 
And for this case if the confidence increase the critical value increase so then this statement is True
Step-by-step explanation:
For a confidence level given c, we can find the significance level like this:

And with the degrees of freedom given by:
We can find the critical value 
And for this case if the confidence increase the critical value increase so then this statement is True
Step-by-step explanation:
the formulae to find the perimeter of a rectangle is p = 2(l+w)
<em>where</em>
p= perimeter
L = length
W = width
just add the length and width {given in the question} , and multiply them by 2
answer: = 2(11+4)
= 2 × 15
= 30 m
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