Question

26. Lactose intolerance causes difficulty digesting dairy products that contain lactose (milk sugar). It is particularly common among people of African or Asian ancestry. At a college, 70% of the population is white; 20% is black; and 10% is Asian. Moreover, 15% of whites, 70% of blacks, and 90% of Asians are lactose intolerant. Consider the (partially) completed tree diagram below: Probability 0.85 Tolerant .595 White 0.70 0.15 Lactose Intolerant (a) (c) Tolerant Black (d) Lactose Intolerant (b) (e) Tolerant Asian (f) Lactose Intolerant The probability that a random chosen student (regardless of race) is lactose intolerant is 0.105 0.140 0.090 0.335

          26. Lactose intolerance causes difficulty digesting dairy products that contain lactose (milk sugar). It is particularly common among people of African or Asian ancestry. At a college, 70% of the population is white; 20% is black; and 10% is Asian. Moreover, 15% of whites, 70% of blacks, and 90% of Asians are lactose intolerant. Consider the (partially) completed tree diagram below:
Probability
0.85 Tolerant .595
White
0.70 0.15 Lactose Intolerant
(a) (c) Tolerant
Black
(d) Lactose Intolerant
(b) (e) Tolerant
Asian
(f) Lactose Intolerant
The probability that a random chosen student (regardless of race) is lactose intolerant is
0.105
0.140
0.090
0.335

26. Lactose intolerance causes difficulty digesting dairy products that contain lactose (milk sugar). It is particularly common among people of African or Asian ancestry. At a college, 70% of the population is white; 20% is black; and 10% is Asian. Moreover, 15% of whites, 70% of blacks, and 90% of Asians are lactose intolerant. Consider the (partially) completed tree diagram below:
Probability
0.85 Tolerant .595
White
0.70 0.15 Lactose Intolerant
(a) (c) Tolerant
Black
(d) Lactose Intolerant
(b) (e) Tolerant
Asian
(f) Lactose Intolerant
The probability that a random chosen student (regardless of race) is lactose intolerant is
0.105
0.140
0.090
0.335

Added by Karina H.

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