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Problem Set-up: Sampling Methods and the Central Limit Theorem

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The area of study is Sampling Methods and the Central Limit Theorem.

Consider the digits in the phone numbers on a randomly selected page of your local phone book a population. Make a frequency table of the final digit of 30 randomly selected phone numbers. For example, if a phone number is 555-9704, record a 4.

Draw a histogram or other graph of this population distribution. Using the uniform distribution, compute the population mean and the population standard deviation.

https://brainmass.com/statistics/central-limit-theorem/problem-set-up-sampling-methods-central-limit-theorem-41440

Solution Preview

I chose 30 phone numbers randomly and got the following

852-4534 4
461-8122 2
454-7100 0
209-2021 1

454-5888 8
434-4114 4
422-7368 8
466-0149 9

454-2571 1
468-2319 9
865-1334 4
455-5469 9

876-2227 7
452-6800 ...

Solution Summary

This solution is provided in 199 words in an attached .doc file. It uses Excel to analyze data and find the frequency distribution, histogram, mean, and standard deviation.

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