Tag | Value |
---|---|
file | Probability_uva-addition-rule-745-en_uva-addition-rule-745-en |
name | uva-addition-rule-745-en |
section | Probability/Elementary Probability/General Rules/Addition rule |
type | schoice |
solution | TRUE, FALSE, FALSE, FALSE |
Type | Conceptual |
Language | English |
Level | Statistical Literacy |
IRT-Difficulty | 2 |
p-value | 0.5905 |
Two cognitive behavioral therapists give the same treatment to similar patients. Annually, behavioral therapist X treats 250 patients, 10 of whom do not recover from their mental state. Behaviorist Y, on the other hand, sees 375 patients annually of whom 30 do not recover. Suppose that at the end of a year, a non cured patient is selected at random. What is then the probability that this non cured patient has been under the treatment of therapist X?