The National Safety Council released a report in 2010 stating 24.97% of all traffic crashes involve drivers using cell phones and texting. The council would like to determine if this percentage has increased over the past three years. A random sample of 363 traffic crashes occurring in 2013 was selected, and it was determined whether or not the driver was using a cell phone during the accident.

Describe the sampling distribution of the sample proportion oftraffic crashes involving a cell phone when samples of 363 traffic crashes are taken.Round any calculated values to four decimal places.

• Shape: The sampling distribution of the sample proportion is Select an answer normally distributed not normally distributed
  • Checks (round to 4 decimal places): np =_____?and n(1 - p) =________?
• Mean: p^= __________?
• Standard deviation: pp^ = ___________?

1. The sample resulted in 105 traffic crashes involving a cell phone. Would this provide any support for the inference the council is interested in?
   • The sample proportion is ____________? (round to 4 decimal places). This sample Select an answer (does not/ does) support the inference the council is interested in because it is Select an answer (larger / smaller) than the proportion reported in 2010.