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.
Answer:
We are given that the rate of change is proportional to its size S
So,
Integrating both sides
S is the population after t hours
is the initial population
Now we are given that After 6 hours there will be 1200 bacteria
So,
a)Now the population after t hours as a function of t;
b) What will be the population after 7 hours?
Substitute t = 7 hours
A bacteria culture starts with 200 bacteria
c) How long will it take for the population to reach 1750 ?
So, it will take 7.2 hours for the population to reach 1750
Answer:
20 gallons
Step-by-step explanation:
The answer is -6x because you have to substract -8x from 2x
Answer:
y=-1-6x
Step-by-step explanation:
6x+y=-1
-6x -6x
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y=-1-6x