question archive The table lists the smoking habits of a group of college students
The table lists the smoking habits of a group of college students
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The table lists the smoking habits of a group of college students.
Sex Non-smoker Regular Smoker Heavy Smoker Total
Man 135 46 5 186
Woman 187 21 11 219
Total 322 67 16 405
If a student is chosen at random, find the probability of getting someone who is a regular or heavy smoker. Round your answer to three decimal places.
A) 0.205 B) 0.239 C) 0.687 D) 0.141
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Answer:
A )
Step-by-Step explanation
Calculation:
From the table,
Total = 405
Number of regular smoker = 67
Number of heavy smoker = 16
Total number of regular an heavy smoker = 67+16 = 83
The probability that selecting a student is a regular or heavy smoker = 83 /405 =0.20493
The answer is ?≈? 0.205
