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For the following problem use the table below to determine the probability and Leave Answers as Fractions
Days exercising 0-1 2-3 4-5 6-7
Male Exercise 40 53 26 6
Female exercise 34 68 37 11
Find the probability that the individual was a male
and exercised 2-3 days/week.
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Solution
First, I formatted the given part by an appropriate way to make it easy readable.
Next, I start my solution.
In the table, I find that cell, which relates to males exercising 2-3 days/week.
The number in the cell is 53.
The post does not say, UNFORTUNATELY, from which category the individual is randomly selected,
// and it is a FAULT of the post //
but I believe and I will assume that the individual is randomly selected from the entire population of all men and women.
So, I calculate the entire population
40 + 53 + 26 + 6 + 34 + 68 + 37 + 11 = 275.
My next step is to form this fraction .
It is your answer.
Solved.
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As you see, all you need to do is to read the problem; to understand what they want and then to proceed accordingly.
There is nothing difficult in it (!)
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So, I answered the first question in the post.
Honestly, your post is a mess of the problem's questions and your trials,
so, it is difficult to separate questions from your thoughts . . .
My I give an advice to you?
When you want to learn a new subject, do not post many questions in one post.
It ALWAYS works against you . . . under any circumstances . . .