Part B. Fully answer all of the following. 5 points each. 1. The following data represent the flight time (in minutes) of a random sample of five flights from Las Vegas, Nevada to Newark, New Jersey. 282 mins., 270 mins., 260 mins., 266 mins., 257 mins Compute the sample variance and the sample standard deviation. 2. Draw a standard normal curve and shade the area that is to be found. Be sure to label all relevant points. Determine the area under the standard normal curve that lies to the left of... a. Z= -2.45 b. Z= 1.35 c. Z= 3.49 3. Explain the Empirical Rule. 4. Harley Davidson Stock. Harley Davidson stock traded for 40 days in 2000 a random sample of the volume was collected with a mean "X-bar"= .77 million shares and a standard deviation "sigma" o= .94. Construct a 95% confidence