Answer:
0.024
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.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean and standard deviation
Suppose the true proportion of high school juniors who skateboard is 0.18.
This means that
Samples of 250 high school juniors are taken
This means that
By how much would their sample proportions typically vary from the true proportion?
This is the standard error, so:
So 0.024 is the answer.
Answer:
Hey there!
The width is 3 inches, and in real life it would be 90 inches. (3x30)
The length is 5.5 inches, and in real life it would be 165 inches. (5.5x30)
90 inches is 7.5 feet
165 inches is 13.75
13.75 times 7.5 is 103.125, so rounded to the nearest integer, that would be 103 ft^2.
Hope this helps :)
Answer:
(-1,-3)
Step-by-step explanation:
Adult : Children = 5 parts : 2 parts
Total parts = 5+2 = 7 parts
1 part of people in the zoo = 105/7 = 15 people
Number of children in the zoo = 15×2 = 30 chidren
the adjacent angles in a parallelogram