The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle.
Among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? Express your answer as a decimal, and round to the nearest hundredth if necessary.
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Reading Solving puzzles
Ride a motorcycle 7 3
Don’t ride a motorcycle 5 9
5/total of readers = ?
The answer I swear is 0.42.
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To find the relative frequency of people whose hobby is reading and who do not ride a motorcycle, we need to divide the number of people who do not ride a motorcycle and whose hobby is reading by the total number of people whose hobby is reading.
From the table, we can see that among people whose hobby is reading, the number of people who do not ride a motorcycle is 5.
To find the total number of people whose hobby is reading, we need to sum up the number of people who ride a motorcycle and the number of people who do not ride a motorcycle in the "Reading" row. The total is 7 + 5 = 12.
Therefore, the relative frequency of not riding a motorcycle among people whose hobby is reading is 5/12 = 0.42 (rounded to two decimal places).
So, the relative frequency of not riding a motorcycle among people whose hobby is reading is 0.42.