Answer:
1. Number of boys in A is 52028.
2. Number of girls in B is 46510.
3. Town B has more number of girls.
Step-by-step explanation:
1. 
2. 
3. 
(A < B)
Answer:
I'm pretty sure it is 60 miles per hour (60:1)
Step-by-step explanation:
I used a unit rate calculator
Sorry if I'm wrong
Let n = required random sample size.
Assume that the population standard deviation is known as σ.
Let m = sample mean.
At the 95% confidence level, the expected range is
(m - k(σ/√n), m + k(σ/√n))
where k = 1.96.
Therefore the error margin is 1.96(σ/√n).
Because the error margin is specified as 3% or 0.03, therefore
(1.96σ)/√n = 0.03
√n = (1.96σ)/0.03
n = 128.05σ²
This means that the sample size is about 128 times the population variance.
Answer:
Smallest sample size = 128.05σ², where σ = population standard deviation.
