Q$2.$use f$=0\mathrm{.}4$

Crazy Joe operates a canoe rental service on the Guadalupe River. He currently leases $15$ canoes from a dealer in a

nearby city at a cost of $$10$ per day. On weekends, when the water is high, he picks up the canoes and drives to a

launching point on the river, where he rents canoes to white$-$water enthusiasts for $$30$ per day. Lately, canoeists have

complained about the unavailability of canoes, so Crazy Joe has recorded the demand for canoes and found the

experience below for the past some number of days:

Daily demand $1011121314151617181920$

Frequency $\{$:$[1,1,2,2,2,3,3,2,2,1,1]$:$\}$

Recommend an appropriate number of canoes to lease.

Change the frequencies by adding $+4$ f to all frequencies $($round up$)$ before answering. $($From

frequencies you need to obtain relative and cumulative relative frequencies first$)$