(a(i))[1]
Determine the value of $p$.
(a(ii))[3]
Finish the histogram.
(a(iii))[1]
A customer is chosen at random to receive a discount voucher. Calculate the probability that this customer spent more than $50 on Monday.
(b(i))[3]
Calculate an estimated mean.
(b(ii))[1]
An error occurred and one Tuesday sale was omitted from the table. That customer spent $41$. Without calculation, explain why the estimated mean would have been higher.