Statistics. histogram

Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits.

Get Your Custom Essay Written From Scratch

We have worked on a similar problem. If you need help click order now button and submit your assignment instructions.

Get Answer Over WhatsApp Order Paper Now

Just from $13/Page

•Calculate the mean of the 20 samples

•Draw a histogram showing the 20 sample means. (Use classes -0.5 to 0.5, 0.5 to 1.5, 1.5 to 2.5 and so on).

•Describe the distribution of the x-bars that you see in part b (shape of distribution, center, and the amount of dispersion).

•Draw 20 more samples and add the 20 new x-bars to the histogram in part b. Describe the distribution that seems to be developing.

Use the empirical rule to test for normality. See the sampling distribution of sample means and the central limit theorem develop from your own data!

Needs help with similar assignment?

We are available 24x7 to deliver the best services and assignment ready within 3-4 hours? Order a custom-written, plagiarism-free paper

Get Answer Over WhatsApp Order Paper Now