Question

According to Statistics Canada figures, 27.5% of all Canadians are in the 0-24 age bracket, 14.0% are in the 25-34 age bracket, 13.5% are in the 35-44 age bracket, and 45.0% are in the 45 and older age bracket. Suppose a market research study shows that Canadians use their leisure time in different ways according to age. For example, of those who are in the 45 and older age bracket, 39% read a book or a magazine for more than 10 hours per week. Of those who are in the 0-24 age bracket, only 11% read a book or a magazine more than 10 hours per week. The percentage figures for reading a book or a magazine for more than 10 hours per week are 23% for the 25-34 age bracket and 28% for the 35-44 age bracket. a. Suppose a Canadian is randomly selected and it is determined that he or she reads a book or a magazine for more than 10 hours per week. Revise the probabilities that he or she is in any given age category. (Round your answers to 6 decimal places, e.g. 0.785391.) Age Group Revised Probability 0-24 25-34 35-44 $\ge$ 45 b. Using these figures, what is the overall percentage of the Canadian population that reads a book or a magazine for more than 10 hours per week? (Round your answers to 5 decimal places, e.g. 0.78539.)

          According to Statistics Canada figures, 27.5% of all Canadians are in the 0-24 age bracket, 14.0% are in the 25-34 age bracket,
13.5% are in the 35-44 age bracket, and 45.0% are in the 45 and older age bracket. Suppose a market research study shows
that Canadians use their leisure time in different ways according to age. For example, of those who are in the 45 and older age
bracket, 39% read a book or a magazine for more than 10 hours per week. Of those who are in the 0-24 age bracket, only 11%
read a book or a magazine more than 10 hours per week. The percentage figures for reading a book or a magazine for more
than 10 hours per week are 23% for the 25-34 age bracket and 28% for the 35-44 age bracket.
a. Suppose a Canadian is randomly selected and it is determined that he or she reads a book or a magazine for more than 10
hours per week. Revise the probabilities that he or she is in any given age category. (Round your answers to 6 decimal places, e.g.
0.785391.)
Age Group
Revised Probability
0-24
25-34
35-44
$\ge$ 45
b. Using these figures, what is the overall percentage of the Canadian population that reads a book or a magazine for more than
10 hours per week? (Round your answers to 5 decimal places, e.g. 0.78539.)

According to Statistics Canada figures, 27.5% of all Canadians are in the 0-24 age bracket, 14.0% are in the 25-34 age bracket,
13.5% are in the 35-44 age bracket, and 45.0% are in the 45 and older age bracket. Suppose a market research study shows
that Canadians use their leisure time in different ways according to age. For example, of those who are in the 45 and older age
bracket, 39% read a book or a magazine for more than 10 hours per week. Of those who are in the 0-24 age bracket, only 11%
read a book or a magazine more than 10 hours per week. The percentage figures for reading a book or a magazine for more
than 10 hours per week are 23% for the 25-34 age bracket and 28% for the 35-44 age bracket.
a. Suppose a Canadian is randomly selected and it is determined that he or she reads a book or a magazine for more than 10
hours per week. Revise the probabilities that he or she is in any given age category. (Round your answers to 6 decimal places, e.g.
0.785391.)
Age Group
Revised Probability
0-24
25-34
35-44
≥ 45
b. Using these figures, what is the overall percentage of the Canadian population that reads a book or a magazine for more than
10 hours per week? (Round your answers to 5 decimal places, e.g. 0.78539.)

Added by Lawrence H.

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