The answer is -7 jzzoksjsjs
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.
Answer:
C is correct
Step-by-step explanation: c is correct great job
Answer:
Step-by-step explanation:
So abc = 789.0
6:$9
Multiply both by 2 (because 12/6=2)
And get 12:$18
3:7
Multiply both by 2 (because 14/7=2)
And get 6:14
6:3
Multiply both by 8 (48/6=8)
And get 48:24
Always label your units. Sorry I’m lazy
