Using the Central Limit Theorem, it is found that the sampling distribution of the sample proportion of the 50 questions on which you get the correct is approximately normal, with mean of 0.7 and standard error of 0.0648.
<h3>What does the Central Limit Theorem state?</h3>
It states that for a proportion p in a sample of size n, the sampling distribution of sample proportion is approximately normal with mean
and standard deviation
, as long as
and
.
In this problem, we have that p = 0.7, n = 50, hence the mean and the standard deviation are given as follows:
![\mu = p = 0.7](https://tex.z-dn.net/?f=%5Cmu%20%3D%20p%20%3D%200.7)
![s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.7(0.3)}{50}} = 0.0648](https://tex.z-dn.net/?f=s%20%3D%20%5Csqrt%7B%5Cfrac%7Bp%281%20-%20p%29%7D%7Bn%7D%7D%20%3D%20%5Csqrt%7B%5Cfrac%7B0.7%280.3%29%7D%7B50%7D%7D%20%3D%200.0648)
More can be learned about the Central Limit Theorem at brainly.com/question/24663213
Answer:
Step-by-step explanation:
3x + 18 = 30
3x + 18 -18 = 30 - 18
3x = 12
x = 4
Answer:
2
Step-by-step explanation:
8% is the same thing as multiplying something by 0.08.
25 x 0.08 = 2
Hope this helps :)
1000 + 1200m = 1500 + 1175m
1200m - 1175m = 1500 - 1000
25m = 500
m = 500/25
m = 20 <== they are the same at 20 months...they will both be 25,000
To find the median cancel out numbers on both sides, until one is left in the middle and if there are two in the middle add them up and divide by two.
So in this case the median is
53+78
131 / 2
65.5