Answer:
(C) -6 is the correct option.
please thanks❤ me and follow me
Let
be the set of people infected with the virus, and
the set of people who get a positive result (true or false) when tested for the virus. Any person tested for the virus will get one or the other result and not both, so the events
and
are mutually exclusive:
where
denotes the size/cardinality of a set.
We're told that
and
, which means
.
Similarly, we have
and we know
and
, so
.
The probability of each possible event is obtained by dividing the size of each corresponding set by the total 200. So we have the following table:
The events
and
are independent if
. From the table above, we find that
and
which are not equal, so the events are not independent.
Answer:
239.4
Step-by-step explanation:
8 x 2992.50/100 = 239.4
-7
+6
+2
+5
+9 that’s the answer