Biologists capture 15 catfish in a pond, tag them, and release them back into the pond. Two weeks later they catch 45 fish and 12 have tags on them. Predict how many fish are in the pond

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax

How do you write 0.5% as a fraction