Mathematics 4024 · O Level · Relative and expected frequencies

Relative and expected frequencies — practice question

(a)[1]

A survey found that $3$ out of every $100$ women were taller than $1.9\text{ m}$. One woman is selected at random from these $100$ women. Calculate the probability that she is not taller than $1.9\text{ m}$.

(b(i))[2]

A new housing estate is being planned. There are three possible plans: $A$, $B$ and $C$. The relative frequency table gives the results. $52$ people preferred plan $C$. Find how many people preferred plan $A$.

(b(ii))[1]

Calculate the total number of people who were surveyed.

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