(Solved): .6 2. The following data give the speeds (in miles per hour), as measured by radar, of 14 cars trave ...

2. The following data give the speeds (in miles per hour), as measured by radar, of 14 cars traveling on Interstate I-5. Assume the speeds of all cars traveling on this highway is approximately normally distributed. Answer parts (a) through (c). 2(a). Determine the sample mean, sample standard deviation, and sample size. \( \bar{x} \) \( s= \) (Round to two decimal places) 2(b). Determine the critical value that corresponds to the \( 98 \% \) level of confidence, and compute the margin of error. \( T_{C}= \) (Round to two decimal places) \( m= \) (Round to one decimal place) Question 4 1 pts 2(c). Construct a 98\% confidence interval for the mean speed of cars traveling on \( 1-5 \). Round your values to one decimal place.