The Truly Amazing Dudes are a group of comic acrobats. The weights (in pounds) of the ten acrobats are as follows.

13817017614115985145149174171

(a) Find the mean and sample standard deviation of the weights. (Round your answers to one decimal place.)

mean lbs

standard deviation lbs

(b) What percent of the data lies within one standard deviation of the mean? %

(c) What percent of the data lies within two standard deviations of the mean? %