Answer:
The mean shall be 10.67 and the standard deviation shall be 6.09
Step-by-step explanation:
There are calculators online that can help u with problems like these :)
j
b
36
12 x 3 = 36
24/13 or 1.8
27b -3 - 14b -21 = 0
13b - 24 = 0
13b = 24
b = 24/13 or 1.8
$0.81
left
I hope I have helped you