1. Brailyn Robertson & Rebecca Shigo

2. DQ Background The Beginning : 1930’s First sold during a trial run at a friend's ice cream store in 1938 10 cents, all-you-can-eat Before the war in 1941 there were only 10 branches After 1947 there were over 100

3. Background Cont’d Dairy Queen Today: 5600 stores in 19 countries across the world 4600 are situated inside the US

4. Is there a difference in the amount of money males and females spend at DQ?

5. Male vs. Female Spending Graph

6. Graph Analisis Overall the women seem to spend more than the men. The highest is an outlier is about $30. This was a woman that came in and bought a cake which is possibly for others. Spread r =.2533 r² =.0641

7. Assumptions State 1.2 independent SRS’s 2.2 Normal Populations Or n 1 > 30 and n 2 > 30 Check 1. Check 2.n 1 > 30 and n 2 > 30 n 1 = 31 and n 2 = 30

8. 2 Sample t-Test Hypothesis: Ho: µ = 10 Ha: µ > 10 t = = -.921 P(t> -.921l df=38.991) =.8188 We fail to reject Ho because the p-value is greater then µ = 0.05. We have sufficient evidence that the average amount of money spent by men and women is equal. P Value

9. Confidence Interval 95% Confidence Interval Equation: (-2.872, 1.0737) We are 95% confident that the true mean of the amount of money males and females spend is between -2.872 and 1.0737 dollars.

10. In general do more Overweight people eat at Dairy Queen?

11. Comparison of People Overweight

12. Graph Analysis The to are pretty much 50-50% The date is different than our prediction and what was predicted for the US. r = r² =

13. Assumptions State 1.SRS 2. 3. Check 1.Checked (as random as possible) 2. 55(.67) 55(1-.67) 3.Pop > 10(55) > 10

14. 1 Proportion t-Test Hypothesis: Ho: P o =.67 Ha: P o >.67 t = = = -3.114 P- Value P(z > -3.1114) =.99906 We fail to reject ho because the p-value is greater than µ = 0.05. We have sufficient evidence that the true proportion is equal to the null hypothesis, P =.67.

15. Confidence Interval 95% Confidence P + z p(1-p) n (.34078,.60467) We are 95% confident that the true proportion of overweigh people that eat at Dairy Queen is between.34078 and.60467.

16. Is there a relation between the toppings and ice cream flavors in a blizzard?

17. Blizzards Graph

18. Conclusion