Question

In: Statistics and Probability

I would like to see a proof of the Central Limit Theorem that applies to a...

I would like to see a proof of the Central Limit Theorem that applies to a simple probability dice scenerio, say rolling a 6 x amount of times. The goal is to help me understand the theorem with a simple example. Thanks!

Solutions

Expert Solution

The central limit theorem is exactly what the shape of the distribution of means will be when we draw repeated samples from a given population. Specifically, as the sample sizes get larger, the distribution of means calculated from repeated sampling will approach normality.

Dice are ideal for illustrating the central limit theorem. If you roll a six-sided die, the probability of rolling a one is 1/6, a two is 1/6, a three is also 1/6, etc. The probability of the die landing on any one side is equal to the probability of landing on any of the other five sides.

The population mean for a six-sided die is (1+2+3+4+5+6)/6 = 3.5 and the population standard deviation is 1.708.

We have randomly selected 30 samples that is in one sample a dice is thrown 50 times. Then, we have calculated mean for each sample.

Thus, if the theorem holds true, the mean of the thirty averages should be about 3.5 with standard deviation 1.708/ 30 = 0.31. Using the dice we “rolled” using R, the average of the thirty averages is 3.49 and the standard deviation is 0.30, which are very close to the calculated approximations


Related Solutions

9 Define the Central Limit Theorem in your own words. When would I use the Central...
9 Define the Central Limit Theorem in your own words. When would I use the Central Limit Theorem in the “real world”?
For each of the following, explain if the Central Limit Theorem applies a) Estimating a right...
For each of the following, explain if the Central Limit Theorem applies a) Estimating a right skewed distribution like income b) Estimating the mean of a right skewed distribution like income with a large sample size c)Finding the exact probability of getting a proportion of successes less than a value d) Creating an approximate confidence interval for a proportion assuming normality.
This week we’ve introduced the central limit theorem. According to the central limit theorem, for all...
This week we’ve introduced the central limit theorem. According to the central limit theorem, for all samples of the same size n with n>30, the sampling distribution of x can be approximated by a normal distribution. In your initial post use your own words to explain what this theorem means. Then provide a quick example to explain how this theorem might apply in real life. At last, please share with us your thoughts about why this theorem is important.
For which of the following situations would the central limit theorem not imply that the sample...
For which of the following situations would the central limit theorem not imply that the sample distribution for ?¯x¯ is approximately Normal? a population is not Normal, and we use samples of size ?=50n=50 . a population is not Normal, and we use samples of size ?=6n=6 . a population is Normal, and we use samples of size ?=50n=50 . a population is Normal, and we use samples of size ?=6n=6 .
It is said that the Central Limit Theorem is the most important theorem in all of...
It is said that the Central Limit Theorem is the most important theorem in all of Statistics. In your own words, describe why it is so important.
To see for yourself how the central limit theorem works, let's say we have a normal...
To see for yourself how the central limit theorem works, let's say we have a normal distribution (with mean =100 and standard devation = 20). Let's generate some random samples of various sizes from this distribution. We can do this in excel using =norm.inv(rand(),100,20) and it will randomly generate numbers from this distribution. I generated four samples of size 5, 10, 20 and 30, and got the means of 124 (n=5); 91 (n=10); 105 (n=20); 103 (n=30). If I continue...
how come learning Statistics in general and in detail like central limit theorem, a correlation, variance,...
how come learning Statistics in general and in detail like central limit theorem, a correlation, variance, frequency, mean, mode, median, and standard deviation are tie to your workforce, health, hobbies and other activities?
describe what the central limit theorem is, and list the requirements necessary for using the Central...
describe what the central limit theorem is, and list the requirements necessary for using the Central Limit Theorem.
3.27. Problem. (Section 11.5) The following are applications of Theorem 11.6 or the Central Limit Theorem....
3.27. Problem. (Section 11.5) The following are applications of Theorem 11.6 or the Central Limit Theorem. (a) Determine the distribution of (1/5)X1 + (2 /5)X2 + (2/5)X3 if X1, X2 and X3 are independent normal distributions with µ = 2 and σ = 3. (b) The weight (kg) of a StarBrite watermelon harvested under certain environmental conditions is normally distributed with a mean of 8.0 with standard deviation of 1.9. Suppose 24 StarBrite watermelons grown in these conditions are harvested;...
What is the central limit theorem? What is the standard error of the mean?
  Question 5 What is the central limit theorem? Provide examples. Question 6 What is the standard error of the mean? Provide examples.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT