Story Time: You are a 60 kg human being that is about to jump off a plane 1,000m off the ground. As you jumped and is starting to get closer to the ground, your parachute doesn’t open when you pull. How fast do fall to the ground from a 1,000m fall?

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47