The difference between the mean of the sample and the mean of the population is A. 0.55
<h3>Calculations and Parameters:</h3>
Given the population data is:
0 3 3 1 3 2 2 2 5 4 3 3 3 0 1 2 0 2 3 3
The sample data is:
5 3 0 2 4
The mean of the population data is:
45/20= 2.25
The mean of the sample data is:
14/5= 2.8
Therefore, the difference between the mean of the sample and the population is:
2.8-2.25= 0.55
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72 times 4 = 288
answer- 288
Answer:
By the Chebyshev Theorem, at least 75% of commuters in Boston has a commute time within 2 standard deviations of the mean
Step-by-step explanation:
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is given by
.
What minimum percentage of commuters in Boston has a commute time within 2 standard deviations of the mean
By the Chebyshev Theorem, at least 75% of commuters in Boston has a commute time within 2 standard deviations of the mean
Answer:
x = 9 and y = -7
Step-by-step explanation:
given:
using substitution method:
2(-4y - 19) + 2y = 4
-8y - 38 + 2y = 4
-6y = 42
y = -7
Solve for x:
x = -4(-7) - 19
x = 28 - 19
x = 9
Answer:
4 gallons.
Step-by-step explanation:
You need to gallons for every 3 inch fish. If you do 4 plus 2 (the length of your fishes) you get 6. 6 divided by 3 is 2. So, you have to 3 inches. You need 2 gallons for every 3 inches. 2 times 2 is 4. Therefore, you need 4 gallons of water.