Answer to Question #319175 in Statistics and Probability for johana

Question

2. During a sale at a men’s store, 16 white sweaters, 3 red sweaters, 9 blue sweaters, and 7 yellow sweaters were purchased. If a customer is selected at random, find the probability that he bought,

a. A blue sweater. (3 marks)

b. A yellow or a white sweater. (3 marks)

c. A red, blue or a yellow sweater. (3 marks)

d. A sweater that was not white (3 marks)

Answer 1

$a:p=\frac{9}{16+3+9+7}=0.257143\\b:p=\frac{7+16}{16+3+9+7}=0.657143\\c:p=\left[ \begin{array}{c} not\\ white\\\end{array} \right] =1-\frac{16}{16+3+9+7}=0.542857\\d:p=\left[ the\,\,same\,\,as\,\,c \right] =0.542857\\$