Answer:
6
Step-by-step explanation:
Suppose the width is "a". Then the length is 2a.
2(a²) =72 Divide both sides by 2
a²= 36
a=6
4.221 is greater because of the .221
.022 see
Answer: yes
Step-by-step explanation:




Use the identity:
and solve for
. You get: 
Do the substitution on the left side to get:

Answer:
Standard error (S.E) = 0.048 ≅ 0.05
Step-by-step explanation:
<u>Explanation</u>:-
Given sample size 'n'=76
Given the dean who randomly selects 76 students and finds that 58 out of 76 are receiving financial aid.
Sample proportion

The standard error is determined by

Standard error is 0.048 ≅ 0.05