Formula for finding the area of a rectangle: length x width
Formula for finding the volume of a rectangular prism: V = lwh
1813 x
= 326.34
18% of 1813 people is 326.34 people
333 is a reasonable estimate.
Answer:
no
Step-by-step explanation:
6-6=0
1-6=-5
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.
