Answer:
1,1
Step-by-step explanation:
Answer:
2e+31
Step-by-step explanation:
30 x 60
Step-by-step explanation:
the length of the perimeter would be 180, subtract 60ft for the fencing replaced by the wall and you meet the maximum 120ft
30X60 gives you the largest area with 1800ft^2
Answer:
a. difference of means
Step-by-step explanation:
Given that :
Mean , x = 9.4
Standard deviation,
= 2.5
Number,
= 12
Mean, y = 6.5
standard deviation,
= 2.4
Number,
= 12
The null hypothesis is : 
The alternate hypothesis is : 
Level of significance,
= 0.1
From the
= 1.363
Since out test is right tailed.
Reject
, if 
We use the test statics,





The value of
with minimum
that is 11 df is 1.363
We go
and
= 1.363
Decision making:
Since the value of
and we reject the 
The p-value : right tail 
= 0.00724
Therefore the value of
, and so we reject the 
Thus we are testing 'the difference of means" in this problem.
A. 12.2%
Steps:
1) 1380-1571= -191
2) -191/1571= -0.12
3) -0.12(100) = 12.15 = 12.2%