Answer:
a: 
Step-by-step explanation:

Expand:



Subtract:

Answer:
The answer is in the explanation
Step-by-step explanation:
Mean value =
= 438
(a) The data appeared to be centered towards 438.
There are little or no skew.
There is no outliers.
(b) yes
(c) standard deviation = s = 14.8955
95% confidence interval = 
=
= (430.3415, 445.6585)
(d) Test statistic
t = 
t = -3.3216
p -value is correctly given in option b.
No, 450 is not a plausible valaue.
Answer:
18
Step-by-step explanation:
I did that in my head could be wrong
Answer:
1620
Step-by-step explanation:
0.36*4500=1620
$2.96 you divide 41.44 by 14