Question

It’s known that 60 % of restaurant customers add ketchup to their meat dish and 50 % of
restaurant customers add mustard to their meat dish. It’s also known that 70% of restaurant
customers add at least one of two ingredients to their meat dish.

The probability that randomly selected restaurant customer adds both ingredients (ketchup
and mustard) to their meat dish is ____________

If it’s known that one particular restaurant customer adds ketchup to meat dish, then
probability that this customer adds mustard to the meat dish is ________________

Can we say that the events of adding ketchup to the meat dish and the event of adding
mustard to the meat dish by the same randomly selected customer are independent events?
Yes or No. _____________________

Answer 1