Answer:
Option D) 50
Step-by-step explanation:
We are given the following information in the question:
p = 0.5
Sample size,n = 100
We have to find the expected value of the distribution.
Formula:

Putting the values, we get,

The expected value of this distribution is 50.
Answer:
.
Step-by-step explanation:
We have been given that captain Umaima has probability 3/7 of hitting the pirate ship.
The pirate only has one good eye, so she hits the Captain's ship with probability 2/5.
The probability that pirate misses the captain's ship will be:

So the probability that pirate misses captain's ship will be 3/5.
Since both events are independent, so by the multiplication rule of probability we will get,
Therefore, the probability that the Captain hits the pirate ship, but the pirate misses will be
.
Answer:
Take away 1 from either side so the equation becomes 63=3x then divide both sides by 3 so it becomes 21=x which is your answer (option A)
Step-by-step explanation:
Answer:
-1.20
Step-by-step explanation:
You are correct because you just had to subtract 2.50 - 3.75 and you get -1.20.