(a(i))[1]
Find the value of $p$.
(a(ii))[2]
Find the probability that on Monday and Tuesday he goes to work by train on one of those days and by bus on the other.
(a(iii))[3]
Find the probability that he goes to work by bus at least once on Wednesday or Thursday.
(b(i))[3]
Complete the histogram so that it shows the data.
(b(ii))[2]
Estimate how many days Yasir is paid overtime during these $70$ work days, given that he starts at $9.00\text{ a.m.}$ and earns overtime for working later than $5.15\text{ p.m.}$.