Out of his monthly salary, Josh spends 37.5% on his bills, on groceries, and on transportation. If he decides to save of the rem
1 answer:
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Answer:
Option D.
Step-by-step explanation:
we know that
The volume of the cylinder is equal to
In this problem we have
substitute
-----> exact value of the volume
Answer:
As the sample size increases, the variability decreases.
Step-by-step explanation:
Variability is the measure of actual entries from mean. The less the deviations the less would be the variance.
For a sample of size n, we have by central limit theorem the mean of sample follows a normal distribution for random samples of large size.
X bar will have std deviation as
where s is the square root of variance of sample
Thus we find the variability denoted by std deviation is inversely proportion of square root of sample size.
Hence as sample size increases, std error decreases.
As the sample size increases, the variability decreases.