In: Statistics and Probability
Ocean fishing for bill fish is very popular in the Cozumel region of Mexico. In the Cozumel region about 45% of strikes (while trolling) resulted in a catch. Suppose that on a given day a fleet of fishing boats got a total of 29 strikes. Find the following probabilities. (Round your answers to four decimal places.)
(a) 12 or fewer fish were caught
(b) 5 or more fish were caught
(c) between 5 and 12 fish were caught
Given
n = total number of strikes = 29
p = probability of strikes resulted in a catch = probability of success = 45% = 0.45
x = number of fish caught = number of success
we can find the probability using binomial probability formula and is given by
a)
where, ( Correct upto 4 decimal place )
Now
=
Therefore, the probability that 12 or fewer fish were caught is 0.4213
b)
Therefore, the probability that 5 or more fish were caught is 0.9996
c)
where
and
Now
= 0.4196 +0.0013
= 0.4209
Therefore, the probability that between 5 and 12 fish were caught is 0.4209