Which statement is true about whether Z and B are
independent events?
A
B
c
Х
10
110
60
180
Y
80
44
59
183
z
61
126
110
297
Total
151
280
229
660
Total
Z and B are independent events because PIZB) = PIZ).
Z and B are independent events because PZB) = PB).
Z and B are not independent events because PZIB)
PIZ)
Z and B are not independent events because PZB)
PB).

351°f

step-by-step explanation:

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :

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