Refer to Exercise 2.44. The measurements for the 8 panels that did not fail were Good $33.5 \quad32.25\quad34.75\quad34.25\quad35.5\quad33.0\quad36.25\quad 35.75$

(a) Calculate the sample mean $\bar{x}$.

(b) Calculate the sample standard deviation $s$.

(c) Does there appear to be a major difference in board area between panels in which LEDs failed and those in which LEDs did not?

Data From Exercise 2.44

Transcribed Image Text:

2.44 A factory experiencing a board-solder defect problem with an LED panel board product tested each board manufactured for LED failure. Data were collected on the area of the board on which LEDs were soldered for 8 bad panels and 8 good panels that passed the failure test. Failure 32.5 34.5 33.5 36.5 34.0 32.25 33.75 35.25 (a) Calculate the sample mean X. (b) Calculate the sample standard deviation s.