The answer to this is 8 1/2.
Answer:
The standard deviation of the sample is 0.0064.
Step-by-step explanation:
The standard deviation of a sample of length n of a population with standard deviation
is given by the following formula:

In this problem, we have that:
61 randomly selected gas stations. This means that 
The standard error of the mean is $0.05. This means that
.
What is the standard deviation of the sample?

The standard deviation of the sample is 0.0064.
Answer:
1024m
Step-by-step explanation:
128÷4=32
32×32=1024
24/8 = 3
3x3 = 9
5x3=15
so
<span> 24 in ratio 3:5 = 9:15</span>