Answer:

Step-by-step explanation:
Since the sample size is quite large, we can use the z-distribution.
The margin of error is given by

Where n is the sample size, s is the sample standard deviation and
is the z-score corresponding to a 90% confidence level.
The z-score corresponding to a 90% confidence level is
Significance level = α = 1 - 0.90= 0.10/2 = 0.05
From the z-table at α = 0.05
z-score = 1.645

Therefore, the margin of error is 0.776.
2-5 inches =125miles
4-75inches=237.50 miles.
7.6=380miles
Answer: 1. C 2.B 3.C
Step-by-step explanation:
1 in = 1 ft
there are 12 inches in a foot...
you could say that 1 inch = 12 inches, or that the scale is 1:12