assignment 3

Assignment # 1 - Sampling Error

Margin of Error

Using the information on page 170 in the text.

"Notice that the percentage of males varies between 54% and 48%. The midpoint of these percentages
is 51%, an dit is possible to claim that the percentage of men in the population varies between 54% and
48% or that the percentage of men in the community is 51% plus or minus 3%."

Calculation: This is repeated for each M&M color. Example.

M&M web site (blue) 24% - Your M&M sample ___% divided by 2 = Margin of error ___ % +/-

Conduct the following sampling error exercise.

1. Purchase a package of M & M plain (1.69 oz / 47.9 g) chocolate candy.
Do Not Use a King Size package or peanut M & M's.

2. Count:

	the total number of candy pieces; AND
	the total pieces for each M & M color.

3. Using the following information on the percentages of each color of M&M plain candy in each package.

M&M Colors	M&M Web Site Count (%)
Blue	24%
Red	13%
Yellow	14%
Orange	20%
Green	16%
Brown	13%

4. Now compare your counts (%) to those of the M & M web site.

5. Calculate your sampling error as a plus (+/-) or minus percentage for each color.

Example:

M&M Colors	M&M Web Site Count (%)	M&M Count (%) from your sample	Sampling Error (+/-)
Blue
Red
Yellow
Orange
Green
Brown

6. Include your total M&M count (total M&M pieces).

7. Enjoy your M&M's

Submit this assignment to the course facilitator as an email message.

[Class] [Unit 2]