A university cafeteria surveyed its customers for their coffee preferences. The findings are summarized as follows: Do Not Drink Coffee Prefer Regular Coffee Prefer Decaffeinated Coffee Total Female 23 145 69 237 Male 18 196 46 260 Total 41 341 115 497 A student is selected at random from this group. Find the probability that: (a) the student does not drink coffee. (b) the student is male. (c) the student is a female who prefers regular coffee. (d) the student prefers decaffeinated coffee, given that the student is male.
A university cafeteria surveyed its customers for their coffee preferences. The findings are summarized as follows:
|
|
Do Not Drink Coffee |
Prefer Regular Coffee |
Prefer Decaffeinated Coffee |
Total |
|
Female |
23 |
145 |
69 |
237 |
|
Male |
18 |
196 |
46 |
260 |
|
Total |
41 |
341 |
115 |
497 |
A student is selected at random from this group. Find the probability that:
(a) the student does not drink coffee.
(b) the student is male.
(c) the student is a female who prefers regular coffee.
(d) the student prefers decaffeinated coffee, given that the student is male.
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((a). Probability that the student does not drink coffee= n(does not drink coffee)/N
= 41/497 = 0.0825
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