James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The
results are shown below.
Bring lunch: 46 males, 254 females
Buy lunch: 176 males, 264 females
The events "male” and "buys lunch” are not independent because
P(buys lunch | male) = P(male) = 0.4.
P(male | buys lunch) = P(male) = 0.3.
P(buys lunch | male) = 0.3 and P(male) = 0.4.
P(male | buys lunch) = 0.4 and P(male) = 0.3.
2 answers:
Answer:
D. P(male | buys lunch) = 0.4 and P(male) = 0.3.
Step-by-step explanation:
46 + 176 = 222 males
254 + 364 = 518
Which is total of 740 people.
The probability of being male is 0.3
46 + 254 = 300 that bring lunch
176 + 264 = 440 that buy their lunch
P(male | buy lunch ) = 0.4
Answer D
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