Question

1.A bag contains 4 gold coins and 7 silver coins
a.What is the probability of drawing a gold coin
b. What i the probability of drawing a silver coin
2. What is the median of the given data: 35, 32, 35, 42, 38, 32, 34

Answer 1

Dear student
$$\begin{gathered} \mathrm{Que}1 \\ \mathrm{Total}\mathrm{no}.\mathrm{of}\mathrm{coins}=4+7=11 \\ \mathrm{a}.\mathrm{Probability}\mathrm{of}\mathrm{drawing}\mathrm{a}\mathrm{gold}\mathrm{coin}=\frac{\mathrm{No}.\mathrm{of}\mathrm{gold}\mathrm{coins}}{\mathrm{Total}\mathrm{no}.\mathrm{of}\mathrm{coins}}=\frac{4}{11} \\ \mathrm{b}.\mathrm{Probability}\mathrm{of}\mathrm{drawing}\mathrm{a}\mathrm{silver}\mathrm{coin}=\frac{\mathrm{No}.\mathrm{of}\mathrm{silver}\mathrm{coins}}{\mathrm{Total}\mathrm{no}.\mathrm{of}\mathrm{coins}}=\frac{7}{11} \\ \mathrm{Que}2 \\ \mathrm{Arrange}\mathrm{the}\mathrm{data}\mathrm{in}\mathrm{ascending}\mathrm{order},\mathrm{we}\mathrm{get} \\ 32,32,34,35,35,38,42 \\ \mathrm{Since}\mathrm{the}\mathrm{middle}\mathrm{observation}\mathrm{is}35. \\ \mathrm{So},\mathrm{the}\mathrm{median}\mathrm{is}35. \end{gathered}$$