Se determinó que un particular tipo de tornillo fabricado por un nuevo equipo, presenta un largo (mm) que puede ser representado de manera adecuada por una distribución normal de parámetros 20 mm y 0,01 (mm) 2 . Los tornillos son clasificados como no defectuosos si su largo es a lo menos 19,91 mm y a lo más 20,09 mm.

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation:

0,0

step-by-step explanation:

8

step-by-step explanation: