1. Shannon McMahon Erin Hagenbuch Hector Diaz Kirsten Croll

2. Introduction We chose this data because everyone that texts while they are driving is a danger to others on the road, not just themselves. It is an important topic because accidents that are cause d by drivers texting can be harmful to others that choose to not text while driving.

3. Raw Data We distributed 550 surveys 310 surveys were returned to us Only 153 of those surveys could be used because 157 upperclassman do not have their license.

4. Grade 11 Results Male Female 38 11 th grade males returned the survey 22 of those males have texted while driving 16 have never texted while driving 57.9% 34 11 th grade females returned the survey 23 of those have texted while driving 11 have never texted while driving 67.6% A total of 72 11 th graders had their license and returned the survey and 45 of them have texted while driving. (62.5%)

5. Grade 12 Results Male Female 39 12 th grade males returned the survey 27 of those males have texted while driving 12 have never texted while driving 69.2% 42 12 th grade females returned the survey 26 of those females have texted while drive 16 have never texted while driving 61.9% A total of 81 12 th graders had their license and returned the survey and 53 of them have texted while driving. (65.4%)

6. Confidence Interval 90% Confidence level -.90 Alpha level -.10 Z-score – 1.64 This is a z-score problem because it involves proportion. Margin of Error -.064 Confidence Interval -.577<p<.705 S.S. – We can be 90% confident that between 57.7% and 70.5% of 11 th and 12 th grade students have texted while driving.

7. Confidence Interval 92% Confidence level -.92 Alpha level -.08 Z-score – 1.75 Margin of Error -.068 Confidence Interval -.573<p<.709 S.S. – We can be 92% confident that between 57.3% and 70.9% of 11 th and 12 th grade students who have their license have texted while driving.

8. Confidence Interval 95% Confidence level -.95 Alpha level -.05 Z-score – 1.96 Margin of Error -.076 Confidence Interval -.565<p<.717 S.S. – We can be 95% confident that between 56.5% and 71.7% of 11 th and 12 th grade students who have their license have texted while driving.

9. Confidence Interval 99% Confidence level -.99 Alpha level -.01 Z-score – 2.58 Margin of Error -.100 Confidence Interval -.541<p<.741 S.S. – We can be 99% confident that between 54.1% and 74.1% of 11 th and 12 th grade students who have their license have texted while driving.

10. Comparison of Confidence Intervals Obviously, as the Confidence level increases the Confidence interval will have a wider percentage range. With a larger Confidence level, the margin of error will increase causing a change in the Confidence interval. Although we had different values for each confidence interval, the values represented the same data.

11. Why we use Confidence Intervals We use confidence intervals so that we can get a representative range of values instead of just a single value. Confidence intervals visually show the amount of people that responded to the survey.

12. Pros and Cons of our Survey Pros Cons Completely random sample. A lot of data was returned to us. Survey was distributed to all upperclassman homerooms, so everyone had the opportunity to answer. More than half of the people did not have their license. During the survey not all upper classman were available to participate. People may have lied on their survey.

13. Summary of Findings We found that 63.95% of all upperclassman students who have their license have texted while driving. 63.55% of upperclassman males responded that they have texted while driving. 64.75% of upperclassman females responded that they have texted while driving. Therefore we found that the percentage of males and females who have texted while driving is almost equal.

14. Real World Impact Texting while driving is a serious problem and is extremely dangerous to all drivers.