Chapter 2 Exercise Solutions Several exercises in this chapter differ from those in the 4th edition. An “*” following the exercise number indicates that the description has changed (e.g., new values). A second exercise number in parentheses indicates that the exercise number has changed. For example, “2-16* (2-9)” means that exercise 2-16 was 2-9 in the 4th edition, and that the description also differs from the 4th edition (in this case, asking for a time series plot instead of a digidot plot). New exercises are denoted with an “☺”. 2-1*. (a) ( ) 1 16.05 16.03 16.07 12 16.029 oz n i i x x n = = = ∑ + +"+ = (b) ( )2 2 2 2 2 1 1 (16.05 16.07 ) (16.05 16.07) 12 0.0202 oz 1 12 1 n n i i i i x x n s n = = ∑ ∑ − + + − + + = = = − − " " MTB > Stat > Basic Statistics > Display Descriptive Statistics Descriptive Statistics: Ex2-1 Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 Ex2-1 12 0 16.029 0.00583 0.0202 16.000 16.013 16.025 16.048