Answer:

Step-by-step explanation:

The answer is A.30%
The way I did this problem was from a number line. I don't have a one: so I'll just make one.
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
So, what you do here is you take out 30% because those are NOT tornadoes fans. 10% 20% 30% 40% 50% 60% 70% .
It says that 40% are girls so... 10% 20% 30%.
Hope you get it right!
Answer:
The standard deviation of the distribution of sample means for samples of size 60 is of 1.2264.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean
and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Standard deviation is 9.5 for a population.
This means that 
Sample of 60:
This means that 
What is the standard deviation of the distribution of sample means for samples of size 60?

The standard deviation of the distribution of sample means for samples of size 60 is of 1.2264.
Find the area of the circle:
Area = 3.14 x 12^2 = 3.24x144 = 452.16 cm^2
The sector is 60 degrees.
Multiply the area of the circle by the fraction of the sector:
452.16 x 60/360 = 75.36 cm^2