Question

Q9) A) If your teacher chooses a student at random from your class
(see the note for reference), then
a. find the probability that you are selected.
b. find the probability that a girl is selected.
c. find the probability that a boy is selected.
d. write which is more likely to happen, selecting a girl or selecting a
boy.
B) In a bulb factory, on checking 100 bulbs randomly, 80 of the bulbs
were found to be working. What is the probability that a bulb selected
at random will work or P(a bulb works) If there are 500 bulbs in a pack,
predict how many of the bulbs will not work.
Note:
STD
Total
Boys
Girls
7A
33
21
12
7B
30
30
00
7C
31
00
31​

Answer 1

Answer:

is 04536767boys

is 65334567