Z varies jointly with x, and y, and z=7 when x= 2, y= 2 pleasee I need an answer now!!
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Answer:
Probability that the person preferred milk as his or her primary drink = 0.3
Step-by-step explanation:
Given -
In a recent survey, 18 people preferred milk, 29 people preferred coffee, and 13 people preferred juice as their primary drink for breakfast .
Total no of people is = 18 + 29 + 13 = 60
If a person is selected at random ,
The probability of person preferred milk =
The probability of person preferred coffee =
The probability of person preferred juice =
Probability that the person preferred milk as his or her primary drink =
P ( milk ) =
= = 0.3