FINAL PROJECT Bliss Brannon, Dan Faulkner, Ryan Dickson

Our Idea  We wanted to see which car was most popular in the mall parking lot  We felt that there would be different people going to the mall on different days and at different times of the day.

Collection of Our Data  We went to different malls on different days so that we would get a better representation of the people that go to the mall  To get an even better representation of the population we also went at different times of the day  While collecting our data we only collected every third car so that our data was random

Background  The Ford Model-T was created in 1908 as the first car  Since then they have been creating more aerodynamic cars that are able to go faster  As gas prices went up car engine sizes went down, but the engine efficiency went up and cars became faster and more fuel efficient

Variables  When collecting our data we decided to look at  The make of the car  The specific model  What type of car it is (sedan, coupe, etc.)  The color of the car  Whether or not the car had a custom license plate  The engine size

Which car do you think is most popular in the mall parking lot?

Make  The most popular company that was in the mall parking lot was Toyota, with Honda not that far behind  There were a lot of companies that only had one car in the parking lots

Model

Type  46% of all of the cars we saw in the parking were sedans  The type of car we saw least in the parking lot was a station wagon  Surprisingly there were more SUVs then there were coupes

Color  From this graph you can tell that the color that showed up the most in the mall parking lots was black

Custom License Plate  There weren't that many cars in the parking lot that had a custom license plate  Around 5% of the cars in the parking lot had a custom license plate and they weren't on any specific make or model

Engine Size  Most of the engines were 4 cylinder  The min was a 3 cylinder and the max was a V8

Country vs. Engine Size  Ho: Engine size is independent from the country that it was made in  Ha: Engine size is dependent from the country that it was made in

Conditions  Categorical Data?  SRS?  All expected cell counts are greater than 5?  Yes  The sample is random  Yes

Work df=2 Chi-squared= P(chi-squared>34.45)=0.0001

Conclusion  We reject our Ho because our p-value of.0001 is less that alpha of  We have sufficient evidence the engine size does depend on what country the car was made in.

Test on SUV  Ho: p = 10%  Ha: p > 10%

Conditions  SRS?  np and nq > 10  Pop > 10n  The sample of the cars was random  12 and 38 > 10  All SUVs > 2090 Z=6.94 P (z>6.94) =.0001

Conclusion  We reject our Ho because our p-value of is less than alpha of 0.05  We have sufficient evidence that there was a greater percent of SUVs in the mall parking lot then the percent of SUVs in America.

Test on Toyota  Ho: p = 12%  Ha: p > 12%  SRS?  np and nq > 10  Pop > 10n  The sample of the cars was random  12 and 38 > 10  All Toyota > 450

Test  We reject our Ho because our p-value of is less than alpha of 0.05  We have sufficient evidence that the percent of Toyotas in the mall parking lot was greater then the percent of Toyotas in America. Z=3.184 P(z>3.184) =

Bias and Error  We went to the mall on a holiday weekend so some people that may frequently visit the mall may have been on vacation  We may not have gone every third car the whole time because some of the vehicles names are on the side of the car and we couldn’t get them.  The engine size was assumed based on the model, but the car could have gotten and engine swap and had a larger engine then assumed.

Personal Opinion  We thought that the most popular cars would be the Honda Accord, Civic, and the Toyota Camry  Bliss and Dan thought that the most popular color would be black, and Ryan thought the most color would be silver  We felt that there would be more sedans then anything else, and the most popular engine would be a 4 cylander

Conclusion  We are able to conclude which color, make, model, engine size, and type of car were most popular  Color: Black  Make: Toyota  Model: Camry  Engine Size: 4 Cylinder  Type: Sedan  We noticed that different cars are driven to the mall on different days and different times of the day