A particular concentration of a chemical found in polluted water has been found to be lethal to 20% of the fish that are exposed

Question

Nookie1986 [14]

4 years ago

11

A particular concentration of a chemical found in polluted water has been found to be lethal to 20% of the fish that are exposed

to the concentration for 24 hours. Twenty fish are placed in a tank containing this concentration of the chemical in water.
a) Find the probability that at most 16 survive.

b) Find the mean and variance of the number that survive

Mathematics

1 answer:

Ivahew [28] · Answer 1 · 2022-01-19T23:30:37+03:00

Ivahew [28]4 years ago

4 0

B) Find the mean and variance of the number that survive
explanation: