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The probability of getting a certain disease is 0.2. A certain test is available which returns a positive result 90% of the time
1. 2 answers
2. 643 views
The probability of getting a certain disease is 0.2. A certain test is available which returns a positive result 90% of the time
1. 0 answers
2. 550 views
1) The probability of getting a certain disease is 0.2. A certain test is available which returns a positive result 90% of the
1. 3 answers
2. 1,573 views
If 25 individuals were alive in 1955 and 500 existed in 2013, what is r?Show work please! a) 475 b)2.99 c)0.052 d)0.029
1. 1 answer
2. 845 views
1) Large/tough seeds act as a selection pressure on what trait?a. Large bills b.Large feathers c.Dark feathers d.Long tails 2)
1. 1 answer
2. 1,475 views
1) Describe 4 processes/forces that can explain all mechanism in Organic Chemistry?My answers: a) Electron Delocalization b)
1. 1 answer
2. 502 views
A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree
1. 1 answer
2. 4,222 views
A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree
1. 0 answers
2. 649 views

OK!!! Test Positive = .38 Test Negative = .62 Test Positive/no disease = ???? I've got the first two right but the 3rd one is still messing me up!
I've got .39 for test positive, .61 for the negative test and .61 for the test positive/no disease but they were all marked as wrong so I was wondering if someone could help me with these questions? I used probability tree to find the right answers but

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