O e None of the above QUESTION 7 In a clinical study, volunteers.are tested for

Question

O e None of the above QUESTION 7 In a clinical study, volunteers.are tested for a gene that has been found to increase the risk for a disease. The probablity that a person carries the gene is o1. Ten people are tested what is the probability that 3 or more people are found to have the gene? 0 a. Approx. 7.0296 O b. Approx. 92.98% ° C. Approx. 98.72% O d. None of the above QUESTION 8 hat is the probability that the 6th individual test is the FIRST person with the gene in question? O a Approx. 6% Ob ApproAaors O c Approx. 60% Od. None of the above

Explanation / Answer

#7.
p = 0.1

P(X >= 3) = 1 - P(X <3)
= 1 - P(X = 0) - P(X = 1) - P(X = 2)
= 1 - (1 - 0.1)^10 - 10C1*0.1*0.9^9 - 10C2*0.1^2*0.9^8
= 1 - 0.9298
= 0.0702

approx. 7.02%

#8.
Required probability = 0.9^5*0.1 = 0.0590

Approx 6%

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.