SOLUTION: Please help me with this question:) A pet store has 4 puppies, 6 kittens, 3 hamsters and 5 snakes. Four of the animals are going to be selected to appear in an upcoming newspaper

Question 1117870: Please help me with this question:)
A pet store has 4 puppies, 6 kittens, 3 hamsters and 5 snakes. Four of the animals are going to be selected to appear in an upcoming newspaper ad. The owner decides to randomly select the animals that will be used in the ad.
a)
State the number of successes, the number of dependent trials, the population size，and the number of successes in the population.
b)
Create the probability distribution for the number of snakes that will appear in the ad.
c)
Calculate the expected value for the number of snakes in the ad.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

With what you have shown in the statement of the problem, question a makes no sense; we don't know what a "success" is.

question b...

The probability of having n snakes among the 4 animals is given by the function

Those function values are

4 snakes: 1/612
3 snakes: 26/612
2 snakes: 156/612
1 snake: 286/612
0 snakes: 143/612

question c...

RELATED QUESTIONS
There are 18 puppies and 9 kittens in a kernel. If six animals are adopted, what is the... (answered by ewatrrr)

Mark volunteers a local pet store. He made took some notes about the animals in the store (answered by greenestamps)

How do you figure out a Pre-Algebra Percent/Pie Chart? It's like this: Cats: 25% Dogs:... (answered by Fombitz,josmiceli)

Jacob and Ashley run an animal shelter that houses only cats and dogs the ratio of cats... (answered by Boreal)

an urn has 5 snakes and 4 scorpions 1) what us probability of drawing two snakes in a (answered by vksarvepalli)

A pet store has 10 puppies including 2 poodles 5 terriers and 3 terriers O (answered by Boreal,Alan3354)

A certain pet store has only cats and dogs. The ratio of the number of cats to the number (answered by rfer,josmiceli)

Please help me solve this question: 33% of all pets sold at a pet store are dogs. One... (answered by stanbon)

Hello, I'm having problems with these and I need sort of explaination on how to solve... (answered by mathmate)