Explore BrainMass
Share

# Generate a sample from a random number table

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

See attached file.

The management of AAAA Company has observed that the company's cash outflows have been increasing much more rapidly than its inflows. Management cannot understand the change; from its perspective, it has been "business as usual." Management has asked you, a fraud expert, to help them understand what is going on. You have decided that the best place to start your investigation is to take a sample of canceled checks and verify that both the controller and another manager signed them - a procedure required by company policy.

Check numbers for the period range from 100 to 800.

Using Table 8.1, follow the instructions below to select a random sample of 15 checks to examine.

Start from the bottom left of the table.
Move through the table from left to right and from bottom to top.
Skip the numbers outside the relevant range.
Use the middle three digits of each number.

#### Solution Preview

A random number table is used to select a sample which should be unbiased in the selection process. The use of a random number table also requires a selection methodology which will not inject bias into how the table is used, meaning there should be a mathematical system used to pick numbers from the table.

We are told the method and the upper and lower limits. What the problem does not say is that duplicate numbers should ...

#### Solution Summary

The 309 word solution explains in detail how to use a random number table to generate a sample that will truly be random (without using Excel).

\$2.19

## A statistician is going to survey a sample of 50 people. He prepared a list of 50 random phone numbers generated by a computer.

WHAT IS WRONG and WHY?

1. A statistician is going to survey a sample of 50 people. He prepared a list of 50 random phone numbers generated by a computer. Next morning he came to work at 8:00 and began to make calls. By 11:00 a.m., his survey was done.
2. The United Nation declared that the world's six-billionth inhabitant was born on October 12, 1999 in Bosnia.
3. Jim Smart started a furniture business in December, 1998. During that month, his factory produced 50 tables. During the whole 1999, 1000 tables were made. In January 2000, Jim proudly announced, "During the last year we increased our production 20 times!"

TRUE OR FALSE (WITH JUSTIFICATION)?

1. Class width = Upper limit of a class - Lower limit of the same class.
2. A class frequency may be equal to zero.
3. The data 9, 12, 18, 30, 25, 15, 8, 42, 29, 44, 31, 26 can be broken into 5 classes: 8-15, 16 - 23, 24 - 31, 32 - 39, 40 - 44. One of these classes is empty.

TRUE OR FALSE (WITH JUSTIFICATION)?

1. For a given data set, the mean and median are always nearly equal.
2. In the same set of data, two or more elements may have the same z score.
3. A negative z score is unusual.
4. For a set having only negative values, both the mean and standard deviation will be negative.

View Full Posting Details