Research says that adult humans should drink 2 liters of water every day. However, the standard deviation is estimated a

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Research says that adult humans should drink 2 liters of water
every day. However, the standard deviation is estimated at 0.8
liters. An event manager arranged 120 liters of mineral water for a
one-day conference to be attended by 50 people.
a. Present the distribution of population and the sample on a
graph.
b. Calculate the probability that the event manager has
sufficient water during the conference day.
c. Calculate the probability that the event manager will have to
order more water during the conference.