1. Meaghan DeMallie, Dan Foley, Thomas Hong

2. Description of Project
We wanted to research how long it takes to eat an Oreo competition style
From there, we wanted to see if there was a difference in time between males and females
We approached random people in the food courts of the Montgomery Mall and Wegman’s for a total of 4 hours
We felt this was the best way to randomize our voluntary response

3. History of the Oreo
In 1898, several baking companies merged to form the National Biscuit Company (NaBisCo), the maker of Oreo cookies.
In 1912, Nabisco had a new idea for a cookie - two chocolate disks with a creme filling in between.
Lemon Meringue & Creme
America’s best selling cookie
1975: the Double Stuf is introduced
Origin of name?
French word for gold, "or" (the main color on early Oreo packages).
Shape of a hill-shaped test version; thus naming the cookie in Greek for mountain, "oreo.“
Combination of taking the "re" from "cream" and placing it between the two "o"s in "chocolate" - making "o-re-o.“
Short and easy to pronounce.

6. Procedure
At our designated location (mall and Wegman’s), officials will approach people to participate in the study.
Because we are asking people to eat something, the study depends on voluntary response.
Instead of using actual Oreos, we used Wegman’s O’s because they were half the price and we are all broke.
Once a contestant has agreed, they will stand with a cookie in hand and once they are ready, official will start the clock

7. Contestants must open the Oreo, lick off the cream filling, show the official, and then eat the remaining cookie.
Official will then stop the clock
and record time and gender of
participant.
CHEATER!!!!!!

8. Officials will then analyze different stats regarding the time it takes to lick off the cream filling, including
Average time
Confidence Interval
Differences in gender

9. Hypotheses Mean Oreo-eating Time Difference between Mean Times of
Ho: Mean time = 45 seconds
Ha: Mean time < 45 seconds
Difference between Mean Times of
Males and Females
Ho: Male mean time = Female mean time
Ha: Male mean time < Female mean time

10. Assumptions 1 Sample T-test 2 Sample T-test SRS
no, voluntary response
n ≥ 30 or normal population
N = 60 > 30
2 Sample T-test
2 independent SRS
2 normal populations or n1 and n2 ≥ 30
n1 = 29 females < 30
n2 = 31 males > 30

11. Explanatory Data Analysis
The data is slightly right skewed.
The mean is seconds and the median is 38 seconds.
The range is 42 from 22 seconds to 64 seconds.

12. Exploratory Data
Male vs. Female – frequency of mean times

13. The data for females is roughly symmetric
The data for females is roughly symmetric. The mean of female times is seconds and the median is 42 seconds. The range is 42 between 22 and 64.
The data for males is slightly right skewed. The mean of male times is seconds and the median is 37 seconds. The range is 31 between 22 and 53.
The data for males was condensed in a smaller range and is therefore more precise than the female data. The center for males appears less than the center for females.

14. Conclusion
We can conclude that males in Bucks and Montgomery County eat Oreos faster than the females because both the mean and median times for males were higher.
The female times had a larger range than male times, which shows females are more varied and eat at different paces

15. 1 Sample T-test for Mean Time of Oreo eating
P(t < | df = 59) = x 10-6
We reject the Ho because our P-value is less than alpha = 0.05
We have sufficient evidence that the true population mean time of eating an Oreo is less than 45 seconds.

16. Confidence Interval for Mean Time
We are 90 % confident that the true mean Oreo eating time is between and seconds

17. 2 Sample T-test comparing men’s Oreo eating time to women’s
P(t > | df = ) =
We reject the Ho because our p-value is less than alpha = 0.05
We have sufficient evidence that the mean time of Oreo consumption for females is greater than that of males

18. Confidence Interval ( ) + t* 6.50157 + 3.851
We are 90 % confident that the true difference between male and female mean time is between and seconds

19. We have concluded the following:
Through the 1-Sample T-Test, we found that the average time to consume an Oreo by licking the creme and then eating the cookie is less than 45 seconds.
Our confidence interval for the population mean led us to be 90% confident that the population mean time of eating an Oreo is between and seconds.
Through the 2-Sample T-Test, we found that the population mean of male times for eating an Oreo is less than the population mean of female times for eating an Oreo.
Our confidence interval for the difference between means led us to be 90% confident that the difference in the population means of female and male times is between and seconds.

20. Application to Population
Our results showed that people in Bucks and Montgomery County eat Oreos faster than what was claimed. Both males and females studied were faster than our claim.
Our results showed that males in Bucks and Montgomery County can consume Oreos faster than females.
Our results can apply to the population by revealing the average time it takes to consume an Oreo. This information could contribute to the Double Stuf Racing League and entice many to participate in this epic race.

21. Bias and Error Bias in the Study Sources for Error
Voluntary response
Hunger level of subject
Comfort level of taking food from a stranger
Sources for Error
Variation in size, temperature, etc.
Grocery store brand affecting data
Different people taking times
Places for improvement
Increase sample size
Somehow remove voluntary response bias

22. Personal Opinions Males > Females
Dan - Delightfully nauseating project.
Tom – It was a bit awkward to approach random people in the mall and watch them eat an Oreo, but it was an exhilarating experience.
Meaghan –Thought it was interesting how competitive the subjects became with one another. And would like to remind Dan and Tom that she is the reigning champ.
Males > Females