Question

Finn’s fish store has 5 tanks of goldfish; each tank holds 40 fish. He collects and inspects 5 fish from each tank and finds that 4 fish have fin rot. Find the estimated number of goldfish in the store that have fin rot. SHOW ALL WORK!

Answer 1

32

Explanation:

p=sample proportion

p=number of defective parts/size of sample = 4/25

Estimate:

(sample proportion)x(size of population) = (4/25)x(200)=32

fish tested = 5x5=25

fish population = 40x5=200