According to newton's 2nd law of motion, jim can throw a farther than a tennis ball, basketball can of soda, liter bottle of soda chair, couch all of the above

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