A student receives a box of chocolates from a friend reading

A student receives a box of chocolates from a friend. reading the back, it seems that 4 of the 15 have coconut in them. the problem is that they all look identical. what is the expected number that should contain coconut from the 6 sampled?

Solution

A student receives a box of chocolates from a friend. reading the back, it seems that 4 of the 15 have coconut in them. the problem is that they all look identical. what is the expected number that should contain coconut from the 6 sampled?

p=4/15

n=6

expected number =np= 6*4/15 =1.6