Answer:


Step-by-step explanation:
Given
--- coefficient of variation


Required
The mean and the median
The coefficient of variation is calculated using:

Where:
mean
So:

Express percentage as decimal

Make
the subject

The coefficient of skewness is calculated using:

This gives:

Make
the subject

Equate both expressions for

Cross multiply


Collect like terms


Divide both sides by -0.88

Hence:

Calculate



So:
Also, the coefficient of skewness is calculated using:


Multiply both sides by 30

Divide both sides by 3


Collect like terms


The statement which identifies Melissa’s error and the correct answer is; Melissa added incorrectly. The correct answer is 4.5°F
<h3>Temperature</h3>
- Initial temperature = -20.5°F
- Change in temperature per hour = 5°F
- Number of hours = 5
New temperature = Initial temperature + (Change in temperature per × Number of hours)
= -20.5°F + (5°F × 5)
= -20.5°F + (25°F)
= 4.5°F
Learn more about temperature:
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Answer:
Step-by-step explanation:
2^3+4^2
2(2)2+4(4)
8+16
24
Divide the fraction gives you an irrational number since the decimal goes on forever but since the decimal can be written as a "fraction or ratio" it is rational.
Best of Luck!
A hypothesis is only tentative: to make sure it's valid, you have to test it.