# Mgq 301-A Website Reported That 31% Of Drivers 18

A website reported that 31% of drivers 18 and older admitted to texting while driving in 2009. In a random sample of200drivers 18 years and older drawn in2010, 52of the drivers said they texted while driving. Complete parts a through c below. a. Construct a 99% confidence interval to estimate the actual proportion of people who texted while driving in 2010. A 99% confidence interval to estimate the actual proportion has a lower limit of ___and an upper limit of____(Round to three decimal places as needed. )b. What is the margin of error for this sample?The margin of error is_____(Round to three decimal places as needed. )c. Is there any evidence that this proportion has changed since 2009 based on this sample?Because the confidence interval found in part a______(includes, does not include), the reported proportion from 2009, this sample________(provides, does not provide)evidence that this proportion has changed since then. (we use the EXCEL)