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Our study changed the world of testing. We found that chewing mint gum improved test score for females by 3.15 points and males 2.6 points. We made millions selling our reasearch to gum companies and it is now used in gum advertising to college students. College students now have a budget for gum and sales go up during finals and mid-term week.

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We randomized our results and the greatest inprovement in test scores was 1.3 points, which is significantly less than the actual difference of 2.6 for males and 3.15 for females. Therefore our results are statistically significant.

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Male no gum average was 78.8
Male with gum average was 81.4
Female no gum average was 76.15
Female with gum average was 79.3

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We offered all 52 participants a $50 gift card for participating in our study which cost us $2,600. Our team of 4 reasearchers are given a one time payment of $500 which is $2,000. We provided the 26 pieces of gum which was 16 cents a stick (total $4). Our total cost was $4,604.

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To replicate this study, we could get another group of 52 students from a different school to verify it’s statistical significance.

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The sample size in our experiment was 52 so the margin of error is 14.1%

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Matched Pair- we will match subjects based on gender, gpa, field of study, and testing ability. We will then use one person from each pair as the control, and the other as the experimental. This will be randomized to erase bias. This will reduce the possibility of lurking variables in the study because the experimental units are so similar.

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This study will be kept blind. The subjects will not know that they are being tested with gum as the treatment. Of course they will know they are chewing gum, but they will not know the other group is not. This goes for the control group as well. They will not be made aware that they are the control, or that the other group is chewing gum.

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Out of every pair, one test taker will not chew mint gum while testing. They will take the test on paper, in a quiet room with the same amount to time the experimental group will receive.

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Our experiment will be studying to find out if test scores improve if one chews gum while takings the test.

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It is possible that a lurking Variable would be their previous knowledge of the topics in the test, and how well they can perform on a standardized testTo eliminate the possibility of lurking variables, we will use a matched pair design. This way we will be comparing subjects of the same knowledge and test taking ability’s.

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The explanatory variable is whether or not the experimental units receive gum.

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Our control group took the test while not chewing mint gum while our experimental group was given mint gum to chew while taking the test.

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We used students from ASU to create matched new pairs. We matched them based on GPA and testing ability. We offered them a $50 compensation in the form of Visa PrePaid gift card.

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Our experimental units are 52 college students (26 males and 26 females).

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Do people who chew mint gum perform better on a standardized test than without mint gum?