A study of hearing impairments in dogs examined eye color (blue versus brown) an
ID: 3208426 • Letter: A
Question
A study of hearing impairments in dogs examined eye color (blue versus brown) and hearing impairment (some versus none) in a very large number of Dalmatian dogs. The study found that 66% of the Dalmatians have brown eyes and no hearing impairment; 23% have brown eyes and some hearing impairment; and 5% have blue eyes and some hearing impairment.
What percent of Dalmatian dogs have blue eyes? 5%
5%
6%
11%
28%
34%
73%
95%
What is the probability that a randomly chosen Dalmatian has some hearing impairment if you know that the dog has blue eyes? 0.18
.05
.18
.34
.45
.5
.66
.83
.95
* put my answers in bold
Explanation / Answer
From the given data,
Since Total percentage 100%
The percentage of Dalmatian dogs have blue eyes is 11%
Correct Answer OPtion (C) 11%
b) The probability that a randomly chosen Dalmatian has some hearing impairment if you know that the dog has blue eyes
P(some hearing/blue eyes) = P(some hearing and blue eyes) / P(blue eyes)
= 5% / 11% = 0.45
Correct Answer: Option (D) 0.45
Hearing None Some Total Eye Brown 66% 23% 89% Blue 6% 5% 11% Total 72% 28% 100%Related Questions
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