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The Cookie Competition

The Cookie Competition. Tiffany Morris Matthew Bradwisch Carly Alm. Samples. Chips Ahoy! Brand Chewy Crunchy Great Value Brand Chewy Crunchy. Hypotheses. Chips Ahoy! would be the preferred brand Normally preferred type would be the same as chosen sample type (Soft vs. Chewy)

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The Cookie Competition

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  1. The Cookie Competition Tiffany Morris Matthew Bradwisch Carly Alm

  2. Samples Chips Ahoy! Brand • Chewy • Crunchy Great Value Brand • Chewy • Crunchy

  3. Hypotheses • Chips Ahoy! would be the preferred brand • Normally preferred type would be the same as chosen sample type (Soft vs. Chewy) • We believed the name brand cookie would contain more chocolate chips per cookie and have a higher price per cookie.

  4. Data Collection Experimental data collection • Selection of sample cookies from population • Weights of cookies as a whole (grams) • Separation of cookie dough and chips • Chips weighed separate (grams)

  5. Data Collection Survey Data • 4 sample cookies to chose from • 48 surveys were completed • Survey located on 1st floor of Old Main • Survey participants were diverse

  6. Presentation of Data Of the 48 participants: • 27 males and 21 females • Mean age 21 years • Range 18 to 55 years old

  7. Presentation of Data

  8. Presentation of Data Participant Status: • 9 freshmen • 6 sophomores • 2 juniors • 14 seniors • 7 other which represented graduate students, faculty, and staff of Minot State University

  9. Preferred Sample Data Of the 48 participants: • 20 chose Chips Ahoy! Crunchy • 10 chose Great Value Crunchy • 9 chose Chips Ahoy! Chewy • 9 chose Great Value Chewy Sample Winner - Chips Ahoy! Crunchy

  10. Preferred SampleConfidence Intervals We are 95% confident that, in the population of MSU students and faculty • 27.7% to 55.6% would prefer Chips Ahoy! Crunchy • 9.3% to 32.2% would prefer Great Value Crunchy • 7.7% to 29.8% would prefer Chips Ahoy! Chewy • 7.7% to 29.8% would prefer Great Value Chewy

  11. Preferred Sample Chart

  12. Normal PreferenceCrunchy vs. Soft Of the 48 participants • 14 or 29.2% normally preferred crunchy • 34 or 70.8%normally preferred soft • 68% of those that normally preferred soft cookies chose acrunchy sample • 50% of those that normally preferred crunchy cookies chose a soft sample

  13. Normal PreferenceCrunchy vs. Soft

  14. Preferred vs. Chosen • We are 90% confident that of those who normally preferred soft cookies 54.45% to 80.84% would choose acrunchy sample • We are 90% confident that of those who normally preferred crunchy cookies 28% to 72% would choose achewy sample • Test of Independence: There was sufficient evidence to suggest that normally preferred and sample chosen are independent for MSU students and faculty.

  15. Preferred vs. Chosen

  16. Gender DifferencesName Brand vs. Generic • 71.43% of females chose Chips Ahoy! in the sample. • 51.85% of males chose Chips Ahoy! and 48.15% of males chose Great Value in the sample We are 95% confident that, in the population of MSU students and faculty, • 7.4% less to 46.6% more females than males would chose Chips Ahoy!, the name brand. • Interval includes 0 • No significant difference between female and male choices

  17. Gender Differences

  18. Cookie Sample Data Chips Ahoy! Chewy had highest • ratio of chips per cookie at 27.76% • mean cookie weight of 13.8 grams • price per cookie of $0.087

  19. Chips per Cookie The Chips Ahoy! brand had more chips per cookie than the Great Value brand, in our sample. Using an Chi-square Goodness of Fit Test • Chips per cookie ratio different per brand? • Using α=0.05, we got a χ²=0.0718 and a p-value of 0.995 • Chips per cookie ratio is not significantly different between brands, in the population.

  20. Cookie Weight DataConfidence Intervals We are 95% confident that the mean cookie weights for population of each brand are • 13.0 to 14.6 grams Chips Ahoy! Chewy • 10.3 to 12.1 grams Chips Ahoy! Crunchy • 13.1 to 14.1 grams Great Value Chewy • 10.4 to 11.4 grams Great Value Crunchy

  21. Cookie Weight Data Tukey’sTest Results

  22. Cookie Weight Data Tukey’s Significance • Mean cookie weights of the chewy samples were not significantly different from each other • Mean cookie weights of the crunchy samples were not significantly different from each other • Mean cookie weights of the chewy samples were significantly different than the crunchy samples

  23. Chewy Vs. CrunchyCookie Weight Data Data Combined for Chewy vs Crunchy • Chips Ahoy! Chewy + Great Value Chewy • Chips Ahoy! Crunchy + Great Value Crunchy Mean cookie weights • 13.70 grams chewy samples • 11.05 grams crunchy samples

  24. Chewy Vs. CrunchyConfidence Intervals We are 95% confident that, in the population of the brands, the mean cookie weights are • 13.3 to 14.1 grams for chewy • 10.6 to 11.5 grams for crunchy We are 95% confident that the average cookie weight for the chewy cookies is 2.0 to 3.3 grams heavier than the crunchy cookies, in the population

  25. Price per CookieTukey’sTest Results

  26. ConclusionHypotheses Results • Chips Ahoy! Crunchy is the winner! • Chips Ahoy! was more preferred brand • Normally preferred is independent of chosen sample type (Soft vs. Chewy) • The chip to cookie ratios were not significantly different • Chips Ahoy! Chewy highest price per cookie • Great Value Crunchy lowest price per cookie • Chips Ahoy! Crunchy and Great Value Chewy not significantly different (price per cookie)

  27. DiscussionChanges for Improvement For the Survey: • More locations around campus • Different times • More surveys • Age confidentiality- ex. locked survey box For Cookie Data: • More accurate scale • Better method for separating chips

  28. DiscussionWhy do you care? • Saves you time choosing at the store! • If you prefer soft cookies, you may want to try a crunchy one. You may like it better! • Chips per cookie are the same, so go ahead! • Need to find a cookie everyone (or at least the majority) will love… Chips Ahoy! Crunchy!

  29. Questions? Thank you!

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